This is a list of names for observable phenomena that contain the word
“effect”, amplified by reference(s) to their respective fields of study.
A
*
Abscopal effect (cancer treatments) (immune system) (medical treatments) (radiation therapy)
*
Accelerator effect (economics)
*
Accordion effect (physics) (waves)
*
Acousto-optic effect
Acousto-optics is a branch of physics that studies the interactions between sound waves and light waves, especially the diffraction of laser light by ultrasound (or sound in general) through an ultrasonic grating.
Introduction
Optics has ...
(nonlinear optics) (waves)
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Additive genetic effects
Additive genetic effects occur when two or more genes source a single contribution to the final phenotype, or when alleles of a single gene (in heterozygotes) combine so that their combined effects equal the sum of their individual effects. Non ...
(genetics)
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Aharonov–Bohm effect
The Aharonov–Bohm effect, sometimes called the Ehrenberg–Siday–Aharonov–Bohm effect, is a quantum mechanical phenomenon in which an electrically charged particle is affected by an electromagnetic potential (φ, A), despite being confine ...
(quantum mechanics)
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Al Jazeera effect
The Al Jazeera effect is a term used in political science and media studies to describe the impact of new media and media sources on global politics, namely, reducing the government and mainstream media monopoly on information and empowering group ...
(Al Jazeera) (media issues)
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Alienation effect (acting techniques) (Bertolt Brecht theories and techniques) (film theory) (metafictional techniques) (theatre)
*
Allais effect
The Allais effect is the alleged anomalous behavior of pendulums or gravimeters which is sometimes purportedly observed during a solar eclipse. The effect was first reported as an anomalous precession of the plane of oscillation of a Foucault ...
(fringe physics)
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Allee effect The Allee effect is a phenomenon in biology characterized by a correlation between population size or density and the mean individual fitness (often measured as '' per capita'' population growth rate) of a population or species.
History and back ...
(biology)
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Ambiguity effect
The ambiguity effect is a cognitive bias where decision making is affected by a lack of information, or "ambiguity". The effect implies that people tend to select options for which the probability of a favorable outcome is known, over an option ...
(cognitive biases)
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Anrep effect
The Anrep effect is an autoregulation method in which myocardial contractility increases with afterload. It was experimentally determined that increasing afterload caused a proportional linear increase in ventricular inotropy. This effect is fo ...
(cardiology) (medicine)
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Antenna effect (digital electronics) (electronic design automation)
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Anti-greenhouse effect (atmospheric dynamics) (atmospheric science) (astronomy) (planetary atmospheres)
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Askaryan effect (particle physics)
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Asymmetric blade effect (aerodynamics)
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Audience effect (psychology) (social psychology)
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Auger effect (atomic physics) (foundational quantum physics)
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Aureole effect
The aureole effect or water aureole is an optical phenomenon similar to Heiligenschein, creating sparkling light and dark rays radiating from the shadow of the viewer's head. This effect is seen only over a rippling water surface. The waves act as ...
(atmospheric optical phenomena) (scientific terminology)
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Autler–Townes effect (atomic, molecular, and optical physics) (atomic physics) (quantum optics)
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Autokinetic effect
The autokinetic effect (also referred to as autokinesis and the autokinetic illusion) is a phenomenon of visual perception in which a stationary, small point of light in an otherwise dark or featureless environment appears to move. It was first re ...
(vision)
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Avalanche effect (cryptography)
*
Averch–Johnson effect (economics)
B
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Baader-Meinhof effect /
Baader-Meinhof phenomenon (psychology)
*
Balassa–Samuelson effect (economics)
*
Baldwin effect
In evolutionary biology, the Baldwin effect, a phenotype-first theory of evolution, describes the effect of learned behaviour on evolution. James Mark Baldwin and others suggested during the eclipse of Darwinism in the late 19th century that a ...
(evolutionary biology) (selection)
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Balloon-carried light effect (balloons) (culture) (entertainment)
*
Bambi effect (hunting) (psychology stubs)
*
Bandwagon effect
The bandwagon effect is the tendency for people to adopt certain behaviors, styles, or attitudes simply because others are doing so. More specifically, it is a cognitive bias by which public opinion or behaviours can alter due to particular acti ...
(cognitive biases) (crowd psychology) (economics effects) (metaphors) (propaganda techniques)
*
Bank effect
The bank effect (channel effect, bank suction, bank cushion, stern suction, ship-bank interaction) is the tendency of the stern of a ship to swing toward the near bank when operating in a river or constricted waterway. Paywall
Phenomenon
...
(marine propulsion) (nautical terms) (water)
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Barkhausen effect (condensed matter) (magnetism)
*
Barnett effect (condensed matter) (magnetism)
*
Barnum effect (psychology)
*
Baskerville effect
The Baskerville effect, or the Hound of the Baskervilles effect, is the alleged self-fulfilling prophecy that there is an increase in rate of mortality through heart attacks on days considered unlucky because of the psychological stress this cause ...
(cardiology)
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Bauschinger effect (classical mechanics) (materials science)
*
Beaujolais effect (Ada programming language)
*
Ben Franklin effect (emotion) (psychology)
*
Bernoulli effect (equations) (fluid dynamics) (wind power)
*
Beta-silicon effect (physical organic chemistry)
*
Bezold effect (optical illusions) (psychological theories)
*
Bezold–Brücke effect (optical illusions)
*
Biefeld–Brown effect
The Biefeld–Brown effect is an electrical phenomenon that produces an ionic wind that transfers its momentum to surrounding neutral particles. It describes a force observed on an asymmetric capacitor when high voltage is applied to the capacitor ...
(physical phenomena) (propulsion)
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Big-fish–little-pond effect
The big-fish–little-pond effect (BFLPE) is a frame of reference model introduced by Herbert W. Marsh and John W. Parker in 1984. According to the model, individuals compare their own self-concept with their peers and equally capable individuals ...
(educational psychology) (pedagogy)
*
Birthday-number effect (psychology)
*
Black drop effect (astronomical transits)
*
Blazhko effect (astronomy)
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Blocking effect
In Kamin's blocking effect the conditioning of an association between two stimuli, a conditioned stimulus (CS) and an unconditioned stimulus (US) is impaired if, during the conditioning process, the CS is presented together with a second CS tha ...
(psychology)
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Bloom (shader effect)
Bloom (sometimes referred to as light bloom or glow) is a computer graphics effect used in video games, demos, and high-dynamic-range rendering (HDRR) to reproduce an imaging artifact of real-world cameras. The effect produces fringes (or feathe ...
(3D computer graphics) (demo effects)
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Bohr effect (hematology) (hemoproteins) (respiratory physiology)
*
Boomerang effect (psychology)
In social psychology, the boomerang effect, also known as " reactance", refers to the unintended consequences of an attempt to persuade resulting in the adoption of an opposing position instead. It is sometimes also referred to "the theory of p ...
(social psychology) (psychology)
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Bouba/kiki effect (cognitive science)
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Bowditch effect (medicine)
*
Bradley effect
The Bradley effect (less commonly the Wilder effect) is a theory concerning observed discrepancies between voter opinion polls and election outcomes in some United States government elections where a white candidate and a non-white candidate ru ...
(American political terms) (elections in the United States) (political history of the United States) (political neologisms) (politics and race) (polling) (psephology) (racism)
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Bridgman effect (electricity) (electromagnetism)
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Brookings effect (atmospheric science) (Curry County, Oregon) (Oregon coast) (Oregon geography) (winds)
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Brown Willy effect (geography of Cornwall) (mesoscale meteorology)
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Bruce effect (reproduction)
*
Bullwhip effect (distribution, retailing, and wholesaling)
*
Butterfly effect (chaos theory) (physical phenomena) (stability theory)
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Bystander effect (crowd psychology) (social phenomena)
*
Bystander effect (radiobiology)
The radiation-induced bystander effect (bystander effect) is the phenomenon in which unirradiated cells exhibit irradiated effects as a result of signals received from nearby irradiated cells. In November 1992, Hatsumi Nagasawa and John B. Little f ...
(radiobiology)
C
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Cage effect (chemistry)
In chemistry, the cage effect (also known as geminate recombination) describes how the properties of a molecule are affected by its surroundings. First introduced by Franck and Rabinowitch in 1934, the cage effect suggests that instead of actin ...
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Calendar effect (behavioral finance) (market trends)
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Callendar effect (atmospheric science) (climate) (climate change)
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Captodative effect (organic chemistry)
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Capture effect (broadcast engineering) (radio) (radio communications/) (telecommunications) (wireless communications)
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Carnoustie effect
Carnoustie Golf Links is in Carnoustie, Angus, Scotland. Carnoustie has four courses – the historic Championship Course, the Burnside Course, the Buddon Links Course and a free-to-play short, five-hole course called The Nestie. Carnoustie ...
(golf) (golf terminology)
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Carryover effect
The carryover effect is a term used in clinical chemistry to describe the transfer of unwanted material from one container or mixture to another. It describes the influence of one sample upon the following one. It may be from a specimen, or a reag ...
(cooking techniques) (food and drink)
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Cascade effect (ecology)
*
Cascade effect (spaceflight)
*
Casimir effect
In quantum field theory, the Casimir effect is a physical force acting on the macroscopic boundaries of a confined space which arises from the quantum fluctuations of the field. It is named after the Dutch physicist Hendrik Casimir, who pred ...
(quantum field theory) (physical phenomena)
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Castle thunder (sound effect) (in-jokes) (sound effects)
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Catapult effect (electromagnetism)
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Catch-up effect (economics effects)
*
Catfish effect (human resource management) (management) (organizational studies and human resource management) (social psychology)
*
Cause and effect
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Ceiling effect (medical treatment) (statistics)
*
Channel capture effect (ethernet) (network topology)
*
Cheerio effect
In fluid mechanics, the Cheerios effect is a colloquial name for the phenomenon of floating objects appearing to either attract or repel one another. The example which gives the effect its name is the observation that pieces of breakfast cereal ...
(fluid mechanics) (physics)
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Cherenkov effect (experimental particle physics) (fundamental physics concepts) (particle physics) (special relativity)
*
Chilling effect (law) (censorship) (freedom of expression) (American legal terms)
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Chimney effect
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Chorus effect
Chorus (or chorusing, choruser or chorused effect) is an audio effect that occurs when individual sounds with approximately the same time, and very similar pitches, converge. While similar sounds coming from multiple sources can occur naturally, ...
(audio effects) (audio engineering) (effects units) (sound recording)
*
Christiansen effect The Christiansen effect is named after the Danish physicist Christian Christiansen and describes the reduced scattering of multi-phase microstructures at wavelengths where their refractive indices match.
A Christiansen filter is a narrow bandpass ...
(optical filters)
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Christofilos effect
The Christofilos effect, sometimes known as the ''Argus effect'', refers to the entrapment of electrons from nuclear weapons in the Earth's magnetic field. It was first predicted in 1957 by Nicholas Christofilos, who suggested the effect had defens ...
(particle physics)
*
Cinderella effect (child abuse)
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Cis effect (inorganic chemistry)
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Clientele effect (economics) (finance)
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Cluster effect (economics effects)
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CNN effect (civil–military relations) (CNN) (news media) (warfare of the modern era)
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Coandă effect (aerodynamics) (boundary layers) (physical phenomena)
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Coattail effect (political terms)
*
Cobra effect
A perverse incentive is an incentive that has an unintended and undesirable result that is contrary to the intentions of its designers. The cobra effect is the most direct kind of perverse incentive, typically because the incentive unintentional ...
(Economics)
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Cocktail party effect (acoustical signal processing) (attention)
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Cohort effect
*
Common-ion effect (ions) (physical chemistry)
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Compton effect
Compton scattering, discovered by Arthur Holly Compton, is the scattering of a high frequency photon after an interaction with a charged particle, usually an electron. If it results in a decrease in energy (increase in wavelength) of the photon ...
(astrophysics) (atomic physics) (foundational quantum physics) (observational astronomy) (quantum electrodynamics) (X-rays)
*
Contrast effect
A contrast effect is the enhancement or diminishment, relative to normal, of perception, cognition or related performance as a result of successive (immediately previous) or simultaneous exposure to a stimulus of lesser or greater value in the sa ...
(cognition) (cognitive biases) (perception) (vision)
*
Coolidge effect
The Coolidge effect is a biological phenomenon seen in animals, whereby males exhibit renewed sexual interest whenever a new female is introduced, even after sex with prior but still available sexual partners. To a lesser extent, the effect is also ...
(jokes) (sexual attraction)
*
Coriolis effect
In physics, the Coriolis force is an inertial or fictitious force that acts on objects in motion within a frame of reference that rotates with respect to an inertial frame. In a reference frame with clockwise rotation, the force acts to the ...
(atmospheric dynamics) (classical mechanics) (force) (physical phenomena) (urban legends)
*
Cotton effect (atomic, molecular, and optical physics) (polarization)
*
Cotton–Mouton effect (magnetism) (optics)
*
Crabtree effect (biochemistry)
*
Cross-race effect
The cross-race effect (sometimes called cross-race bias, other-race bias, own-race bias or other-race effect) is the tendency to more easily recognize faces that belong to one's own racial group. In social psychology, the cross-race effect is d ...
(face recognition)
*
CSI effect (criminal law) (criminology) (
CSI television series) (psychology) (television terminology)
*
Cupertino effect (computers) (spell checking)
*
Cytopathic effect (microbiology terms)
D
*
De Haas–van Alphen effect (condensed matter) (magnetism) (quantum physics)
*(de Sitter effect: see)
Geodetic effect (general relativity)
*
Debye–Falkenhagen effect
The increase in the conductivity of an electrolyte solution when the applied voltage has a very high frequency is known as Debye–Falkenhagen effect. Impedance measurements on water-p-dioxane and the methanol-toluene systems have confirmed Falken ...
*
Decoy effect (consumer behavior) (decision theory) (economic theories) (finance theory) (marketing)
*
Delay (audio effect)
Delay is an audio signal processing technique that records an input signal to a storage medium and then plays it back after a period of time. When the delayed playback is mixed with the live audio, it creates an echo-like effect, whereby the ...
(audio effects) (effects units) (musical techniques)
*
Dellinger effect (radio communications)
*
Dember effect
In physics, the Dember effect is when the electron current from a cathode
A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic ''CCD'' for ''Ca ...
(electrical phenomena) (physics)
*
Demo effect (demoscene)
*
Demonstration effect (human behavior) (sociological terms)
*
Denomination effect
The denomination effect is a form of cognitive bias relating to currency, suggesting people may be less likely to spend larger currency denominations than their equivalent value in smaller denominations. It was proposed by Priya Raghubir, profess ...
(behavioral economics)
*
Diderot effect
The Diderot Effect is a phenomenon that occurs when acquiring a new possession leads to a spiral of consumption that results in the acquisition of even more possessions. In other words, it means that buying something new can cause a chain reaction ...
(anthropology) (consumer behaviour)
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Ding Hai effect (economy of Hong Kong) (Hong Kong culture)
*
Direct effect (European Union law)
*
Disposal tax effect The situation of additional taxes or tax savings resulting from selling the last item of its class in an inventory due to difference between its undepreciated capital cost (UCC) and its salvage value (SV).Chan S. Park et al., ''Contemporary Engi ...
(economics and finance) (finance) (taxation)
*
Disposition effect (economics and finance)
*
Dole effect (climatology) (oxygen) (paleoclimatology) (photosynthesis)
*
Domino effect
A domino effect or chain reaction is the cumulative effect generated when a particular event triggers a chain of similar events. This term is best known as a mechanical effect and is used as an analogy to a falling row of dominoes. It typically ...
(physics) (politics)
*
Doppler effect
The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, ...
(Doppler effects) (radio frequency propagation) (wave mechanics)
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Downing effect (psychology)
*
Dresselhaus effect (physics)
*
Droste effect (artistic techniques)
*
Dunning–Kruger effect (personality) (social psychology)
E
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Eagle effect (antibiotic resistance) (pharmacology)
*
Early effect (transistors)
*
Eberhard effect In photographic science, the Eberhard effect, named after Gustav Eberhard, is a special case of two Mackie lines when narrow areas of high and low densities (usually lines approaching within 1 mm. thickness) cause the two Mackie lines to meet w ...
(science of photography)
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Edge effect (ecological succession) (ecology)
*
Edison effect (atomic physics) (electricity) (Thomas Edison) (vacuum tubes)
*
Efimov effect (physics)
*
Einstein effect (disambiguation), several different effects in physics
*
Einstein–de Haas effect (science)
*
Electro-optic effect
Electro–optics is a branch of electrical engineering, electronic engineering, materials science, and material physics involving components, electronic devices such as lasers, laser diodes, LEDs, waveguides, etc. which operate by the prop ...
(nonlinear optics)
*
Electrocaloric effect The electrocaloric effect is a phenomenon in which a material shows a reversible temperature change under an applied electric field. It is often considered to be the physical inverse of the pyroelectric effect. It should not be confused with the T ...
(cooling technology) (heat pumps)
*
Electron-cloud effect The electron-cloud effect is a phenomenon that occurs in particle accelerators and reduces the quality of the particle beam.
Explanation
Electron clouds are created when accelerated charged particles disturb stray electrons already floating in ...
(particle accelerators) (physics)
*
Electroviscous effects (colloid chemistry) (surface chemistry)
*
ELIZA effect (artificial intelligence) (human–computer interaction) (propositional fallacies)
*
Embedding effect (environmental economics)
*
EMC effect (particle physics)
*
Emerson effect
The Emerson effect is the increase in the rate of photosynthesis after chloroplasts are exposed to light of wavelength 680 nm (deep red spectrum) and more than 680 nm (far red spectrum). When simultaneously exposed to light of both wavelengt ...
(photosynthesis)
*
Endowment effect (behavioral finance) (cognitive biases) (psychological theories)
*
Enhanced Permeability and Retention effect (medicine)
*
Eötvös effect
The Eötvös effect is the change in measured Earth's gravity caused by the change in centrifugal acceleration resulting from eastbound or westbound velocity. When moving eastbound, the object's angular velocity is increased (in addition to Ear ...
(geodesy) (topography)
*
Epps effect In econometrics and time series analysis, the Epps effect, named after T. W. Epps, is the phenomenon that the empirical correlation
In statistics, correlation or dependence is any statistical relationship, whether causal or not, bet ...
(econometrics) (statistical terminology) (statistics)
*
Ettinghausen effect (condensed matter) (electrodynamics) (thermodynamics)
*
Evershed effect (physics) (solar phenomena)
*
Exciter (effect) (audio effects) (effects units)
F
*
Fahraeus–Lindquist effect (blood) (fluid dynamics) (molecular and cellular biology)
*
False consensus effect (cognitive biases) (futurology) (group processes) (psychological theories) (sustainability)
*
Faraday effect
The Faraday effect or Faraday rotation, sometimes referred to as the magneto-optic Faraday effect (MOFE), is a physical magneto-optical phenomenon. The Faraday effect causes a polarization rotation which is proportional to the projection of the ...
(magnetism) (optics)
*
Ferroelectric effect (condensed matter physics) (electrical phenomena)
*
Fink effect
The Fink effect, also known as "diffusion anoxia", "diffusion hypoxia",
or the "second gas effect",
is a factor that influences the pO2 (partial pressure of oxygen) within the pulmonary alveoli. When water- soluble gases such as anesthetic age ...
(anesthesia) (diffusion)
*
Flaming sword (effect)
A flaming sword is a sword that has been coated with some type of combustible fuel, with the fuel being set on fire. This is most widely done for entertainment purposes in circuses, magic performances and other forms of display as a side act o ...
(fire arts) (special effects)
*
Floating body effect (electronics) (semiconductors)
*
Floodgate effect (social phenomena) (sociology)
*
Floor effect (statistics)
*
Florence Nightingale effect (Florence Nightingale) (love) (psychology)
*
Flutie effect (student sport)
*
Flux pinning (Physics)
*
Flynn effect
The Flynn effect is the substantial and long-sustained increase in both fluid and crystallized intelligence test scores that were measured in many parts of the world over the 20th century. When intelligence quotient (IQ) tests are initially stan ...
(futurology) (intelligence) (psychological theories) (psychometrics) (race and intelligence controversy)
*
Focusing effect (cognitive biases)
*
Forbush effect (cosmic rays) (solar phenomena)
*
Forer effect
The Barnum effect, also called the Forer effect or, less commonly, the Barnum–Forer effect, is a common psychological phenomenon whereby individuals give high accuracy ratings to descriptions of their personality that supposedly are tailored ...
(cognitive biases) (history of astrology) (psychological theories)
*
Founder effect
In population genetics, the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population. It was first fully outlined by Ernst Mayr in 1942, usi ...
(ecology) (population genetics)
*
Fractional quantum Hall effect
The fractional quantum Hall effect (FQHE) is a physical phenomenon in which the Hall conductance of 2-dimensional (2D) electrons shows precisely quantized plateaus at fractional values of e^2/h. It is a property of a collective state in which elec ...
(physics)
*
Franssen effect (acoustics) (sound perception)
*
Franz–Keldysh effect (condensed matter) (electronic engineering) (electronics) (optics) (optoelectronics)
*
Free surface effect (fluid mechanics)
*
Front projection effect (film production)
*
Fujiwhara effect (tropical cyclone meteorology) (vortices)
*
Full screen effect
A full screen effect (sometimes written as fullscreen effect) is any graphics technique that is applied to the entire screen, usually after the rest of the image has been rendered. This is in contrast to effects that are applied to each element of ...
(computer graphics) (demo effects)
G
*
Garshelis effect (electric and magnetic fields in matter) (magnetism) (physics)
*
Gauche effect (stereochemistry)
*
Gell-Mann amnesia effect
John Michael Crichton (; October 23, 1942 – November 4, 2008) was an American author and filmmaker. His books have sold over 200 million copies worldwide, and over a dozen have been adapted into films. His literary works heavily feature tech ...
(journalism)
*
Generation effect (cognitive biases) (memory biases) (psychological theories)
*
Geodetic effect (general relativity)
*
Gerschenkron effect (economic development) (economic systems) (economics and finance) (econometrics) (index numbers) (national accounts)r
*
Giant magnetoresistive effect (condensed matter physics) (electric and magnetic fields in matter) (quantum electronics) (spintronics)
*
Gibbons–Hawking effect (general relativity)
*
Gibbs–Donnan effect (biology) (physics)
*
Gibbs–Thomson effect (petrology) (thermodynamics)
*
Glass house effect
The Glass House Effect (or GHE) is the resulting phenomenon brought on by an awareness that one is subject to ubiquitous surveillance. In corporate environments, the transparency is considered a good idea, as it is believed this discourages cor ...
(culture) (surveillance)
*
Glasser effect (physics)
*
Goos–Hänchen effect (optical phenomena)
*
Great Salt Lake effect (natural history of Utah)
*
Green-beard effect (evolution) (evolutionary biology) (game theory) (selection)
*
Greenhouse effect
The greenhouse effect is a process that occurs when energy from a planet's host star goes through the planet's atmosphere and heats the planet's surface, but greenhouse gases in the atmosphere prevent some of the heat from returning directly ...
(atmosphere) (atmospheric radiation) (climate change feedbacks and causes) (climate forcing)
*
Ground effect (aircraft) (aerodynamics)
*
Ground effect (cars) (aerodynamics) (motorsport terminology)
*
Gunn effect (diodes) (microwave technology) (physics) (terahertz technology)
H
*
Haas effect (audio engineering) (sound) (speakers)
*
Haldane effect (hematology) (hemoproteins) (protein)
*
Hall effect
The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current. It was disc ...
(condensed matter physics) (electric and magnetic fields in matter)
*
Hall of mirrors effect
This list includes terms used in video games and the video game industry, as well as slang used by players.
0–9
A
...
(computer graphic artifacts) (Doom) (id software) (video game glitches)
*
Halo effect (cognitive biases) (educational psychology) (logical fallacies) (social psychology)
*
Hanbury Brown and Twiss effect (quantum optics)
*
Harem effect (harem) (human sexuality) (sex) (sexual orientation and identity) (sexual orientation and society)
*
Hawthorne effect (educational psychology) (psychological theories) (social phenomena)
*
Health effect (health) (health effectors) (pollution)
*
Holtzman effect (Dune technology) (physics in fiction)
*
Horizon effect (artificial intelligence) (game artificial intelligence)
*
Hostile media effect (cognitive biases) (criticism of journalism) (journalism standards) (psychological theories)
*
Hot chocolate effect
The hot chocolate effect is a phenomenon of wave mechanics in which the pitch heard from tapping a cup of hot liquid rises after the addition of a soluble powder.Frank S. Crawford, May 1982, "The hot chocolate effect", ''American Journal of Physic ...
(acoustics) (physics) (wave mechanics)
*
Hundredth monkey effect (behavioral science) (New Age) (urban legends)
*
Hydrophobic effect
The hydrophobic effect is the observed tendency of nonpolar substances to aggregate in an aqueous solution and exclude water molecules. The word hydrophobic literally means "water-fearing", and it describes the segregation of water and nonpola ...
(chemical bonding) (supramolecular chemistry)
*
Hyperchromic effect (biochemistry)
*
Hypersonic effect
The hypersonic effect is a phenomenon reported in a controversial scientific study by Tsutomu Oohashi et al.,T. Oohashi, E. Nishina, M. Honda, Y. Yonekura, Y. Fuwamoto, N. Kawai, T. Maekawa, S. Nakamura, H. Fukuyama, and H. ShibasakiInaudible hi ...
(acoustics) (hearing) (psychology) (ultrasound)
I
*
Ideomotor effect
*
IKEA effect (marketing) (psychology)
*
Imbert–Fedorov effect (optical phenomena)
*
In-camera effect (filming) (special effects)
*
Incidental effect (European Union law)
*
Indirect effect (European Union law)
*
Inductive effect (chemical bonding)
*
Inert pair effect (atomic physics) (inorganic chemistry) (quantum chemistry)
*
inertial supercharging effect (automobile) (engine technology)
*
Inner-platform effect (anti-patterns)
*
International Fisher effect (economics and finance) (finance theories) (interest rates)
*
Inverse Doppler effect (Doppler effects) (wave mechanics)
*
Inverse Faraday effect (electric and magnetic fields in matter) (optical phenomena)
J
*
Jack-in-the-box effect (military) (military slang and jargon) (tanks)
*
Jahn–Teller effect (condensed matter physics) (inorganic chemistry) (organometallic chemistry) (quantum chemistry)
*
January effect (behavioral finance) (economics and finance) (market trends) (stock market)
*
Janus effect (effects) (sociology)
*
Johnsen–Rahbek effect The Johnsen–Rahbek effect occurs when an electric potential is applied across the boundary between a metallic surface and the surface of a semiconducting material or a polyelectrolyte. Under these conditions an attractive force appears, whose ...
(classical mechanics) (electrical engineering)
*
Joule–Thomson effect
In thermodynamics, the Joule–Thomson effect (also known as the Joule–Kelvin effect or Kelvin–Joule effect) describes the temperature change of a ''real'' gas or liquid (as differentiated from an ideal gas) when it is forced through a valve ...
(thermodynamics)
*
Josephson effect
In physics, the Josephson effect is a phenomenon that occurs when two superconductors are placed in proximity, with some barrier or restriction between them. It is an example of a macroscopic quantum phenomenon, where the effects of quantum me ...
(condensed matter physics) (sensors) (superconductivity)
*
Jupiter effect
''The Jupiter Effect'' is a 1974 book by John Gribbin and Stephen Plagemann, in which the authors predicted that an alignment of the planets of the Solar System would create a number of catastrophes, including a great earthquake on the San Andreas ...
(astronomy) (science book)
K
*
Kadenacy effect (automobile parts) (engine technology)
*
Kapitsa–Dirac effect (physics)
*
Kappa effect (geography) (psychology)
*
Kate Middleton effect
Catherine, Princess of Wales, (born Catherine Elizabeth Middleton; 9 January 1982) is a member of the British royal family. She is married to William, Prince of Wales, heir apparent to the British throne, making Catherine the likely next ...
(celebrity) (fashion)
*
Kautsky effect (fluorescence)
*
Kaye effect (fluid dynamics)
*
Ken Burns effect (film techniques)
*
Kendall effect (telecommunications)
*
Kerr effect
The Kerr effect, also called the quadratic electro-optic (QEO) effect, is a change in the refractive index of a material in response to an applied electric field. The Kerr effect is distinct from the Pockels effect in that the induced index cha ...
(nonlinear optics)
*
Keynes effect (economics and finance) (Keynesian economics)
*
Keystone effect (technology)
*
Kinetic depth effect (perception)
*
Kinetic isotope effect (chemical kinetics) (physical organic chemistry)
*
Kirkendall effect (chemistry) (metallurgy)
*
Klein–Nishina effect (quantum field theory)
*
Knife-edge effect
Diffraction is defined as the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture. The diffracting object or aperture effectively becomes a ...
(radio frequency propagation)
*
Kohn effect (physics)
*
Kondo effect
In physics, the Kondo effect describes the scattering of conduction electrons in a metal due to magnetic impurities, resulting in a characteristic change i.e. a minimum in electrical resistivity with temperature.
The cause of the effect was fir ...
(condensed matter physics) ) (physical phenomena)
*
Kozai effect (astronomy) (celestial mechanics)
*
Kuleshov effect (cinema of Russia) (cognitive biases) (film editing) (film techniques) (psychological theories)
L
*
Lake effect (snow or ice weather phenomena)
*
Lake Wobegon effect (cognitive biases) (psychological theories) (social psychology)
*
Landau–Pomeranchuk–Migdal effect (high-energy physics)
*
Larsen effect (audio feedback)
*
Late effect (disease)
*
Lawn dart effect (psychology)
*
Lazarus effect (particle detectors)
*
Lead–lag effect (control theory) (economics and finance)
*
Leakage effect (tourism)
*
Learning effect (economics)
In economics, the learning effect is the process by which education increases productivity
Productivity is the efficiency of production of goods or services expressed by some measure. Measurements of productivity are often expressed as a rati ...
(economics) (economics terminology)
*
Lee–Boot effect (biology) (reproduction)
*
Legalized abortion and crime effect (abortion debate) (criminology)
*
Leidenfrost effect (physical phenomena)
*
Lenard effect (physics)
*
Lense–Thirring effect (effects of gravitation) (tests of general relativity)
*
Leveling effect
Leveling effect or solvent leveling refers to the effect of solvent on the properties of acids and bases. The strength of a strong acid is limited ("leveled") by the basicity of the solvent. Similarly the strength of a strong base is leveled by ...
(chemistry)
*
Levels-of-processing effect (educational psychology) (psychology) (psychological theories)
*
Liquid Sky (effect) (lasers) (stage lighting)
*
Little–Parks effect (condensed matter physics)
*
Lockin effect In superconductivity, the Lockin effect refers to the preference of vortex phases to be positioned at certain points within cells of a crystal lattice of an organic superconductor
An organic superconductor is a synthetic organic compound that exhi ...
(physics)
*
Lombard effect (phonetics) (human voice) (animal communication) (human communication) (noise pollution)
*
Lotus effect
The lotus effect refers to self-cleaning properties that are a result of ultrahydrophobicity as exhibited by the leaves of '' Nelumbo'', the lotus flower. Dirt particles are picked up by water droplets due to the micro- and nanoscopic archite ...
(nanotechnology)
*
Low-frequency effects
The low-frequency effects (LFE) channel is a band-limited audio track that is used for reproducing deep and intense low-frequency sounds in the 3–120 Hz frequency range.
This track is normally sent to a subwoofer—a loudspeaker d ...
(film sound production) (technology)
*
Lubberts effect
The Lubberts effect is the non-uniform response of an imaging system to X-rays that are absorbed at different depths within the input phosphor. It indicates an input phosphor depth-dependent response of the imaging system. It is named for G. Lubbe ...
(medicine) (radiography) (radiology)
*
Lunar effect
The lunar effect is a purported unproven correlation between specific stages of the roughly 29.5-day lunar cycle and behavior and physiological changes in living beings on Earth, including humans. In some cases the purported effect may depend on ...
(moon myths) (pseudoscience)
*
Luxemburg–Gorky effect In radiophysics, the Luxemburg–Gorky effect (named after Radio Luxemburg and the city of Gorky (Nizhny Novgorod)) is a phenomenon of cross modulation between two radio waves, one of which is strong, passing through the same part of a medium, espec ...
(radio communication) (radio spectrum)
M
*
Magali effect Magaly or Magali is a given name.
Magali may refer to:
* Magali Amadei (born 1974), French fashion model
*Magali Babin (born 1967), Canadian musician and composer
* Magali Febles (born 1964), Dominican beauty pageant director
*Magali Harvey (born 1 ...
*
Magneto-optic effect (electric and magnetic fields in matter) (optical phenomena)
*
Magneto-optic Kerr effect (condensed matter physics) (electric and magnetic fields in matter) (optical phenomena)
*
magnetocaloric effect (physical phenomena) (electric and magnetic fields in matter) (thermodynamics)
*
Magnus effect
The Magnus effect is an observable phenomenon commonly associated with a spinning object moving through a fluid. The path of the spinning object is deflected in a manner not present when the object is not spinning. The deflection can be ex ...
(fluid dynamics)
*
Malmquist effect (astronomy)
*
Malter effect (physics)
*
Mandela effect (psychology) (paranormal)
*
Marangoni effect (fluid dynamics) (fluid mechanics) (physical phenomena)
*
Marchywka effect
The Marchywka effect refers to electrochemical cleaning of diamond using an electric field induced with remote electrodes.
Discovery and development
It was first observed by accident by Mike Marchywka while trying to find a selective means to ...
(electrochemistry) (ultraviolet sensor production)
*
Mark Twain effect In some stock markets, the Mark Twain effect is the phenomenon of stock returns in October being lower than in other months. The name comes from a line in Mark Twain's Pudd'nhead Wilson: "October. This is one of the peculiarly dangerous months to sp ...
(economics and finance) (stock market)
*
Martha Mitchell effect (psychological theories) (psychosis)
*
Massenerhebung effect (trees)
*
Maternal age effect
Advanced maternal age, in a broad sense, is the instance of a woman being of an older age at a stage of reproduction, although there are various definitions of specific age and stage of reproduction.[Maternal effect
A maternal effect is a situation where the phenotype of an organism is determined not only by the environment it experiences and its genotype, but also by the environment and genotype of its mother. In genetics, maternal effects occur when an orga ...]
(developmental biology)
*
Matthew effect (education)
The Matthew effect of accumulated advantage, Matthew principle, or Matthew effect, is the tendency of individuals to accrue social or economic success in proportion to their initial level of popularity, friends, wealth, etc. It is sometimes summar ...
(education)
*
Matilda effect (Research)
*
Matthew effect (sociology) (adages) (social phenomena) (sociology of scientific knowledge)
*
McClintock effect
Menstrual synchrony, also called the McClintock effect, or the Wellesley effect, is a contested process whereby women who begin living together in close proximity would experience their menstrual cycle onsets (the onset of menstruation or menses) ...
(menstruation)
*
McCollough effect
The McCollough effect is a phenomenon of human visual perception in which colorless gratings appear colored contingent on the orientation of the gratings. It is an aftereffect requiring a period of induction to produce it. For example, if someon ...
(optical illusions)
*
McGurk effect (auditory illusions) (perception) (psychological theories)
*
Meissner effect (levitation) (magnetism) (superconductivity)
*
Meitner–Hupfeld effect
The Meitner–Hupfeld effect, named after Lise Meitner and Hans-Hermann Hupfeld, is an anomalously large scattering of gamma rays by heavy elements. The effect was later explained by a broad theory from which evolved the Standard Model, a theor ...
(particle physics)
*
Mellanby effect (health) (alcohol intoxication)
*
Memory effect (electric batteries)
*
Mesomeric effect (chemical bonding)
*
Microwave auditory effect (cognitive neuroscience) (espionage) (hearing) (human psychology) (less-lethal weapons) (mind control) (sound)
*
Mid-domain effect (macroecology) (biogeography) (biodiversity)
*
Mikheyev–Smirnov–Wolfenstein effect (particle physics)
*
Milky seas effect
Milky seas, also called mareel, is a luminous phenomenon in the ocean in which large areas of seawater (up to ) appear to glow translucently (in varying shades of blue). Such occurrences glow brightly enough at night to be visible from satelli ...
(aquatic biology) (biological oceanography) (bioluminescence)
*
Miller effect (electrical engineering) (electronics terms)
*
Miniature effect
A miniature effect is a special effect created for motion pictures and television programs using scale models. Scale models are often combined with high speed photography or matte shots to make gravitational and other effects appear convincing ...
(film and video technology) (film techniques) (scale modeling) (scientific modeling) (special effects) (visual effects)
*
Misinformation effect (cognitive biases) (psychological theories)
*
Missing letter effect (perception) (psychometrics)
*
Misznay–Schardin effect (explosives)
*
Mohring effect (microeconomics) (transportation)
*
Mössbauer effect (condensed matter physics) (nuclear physics) (physical phenomena)
*
Mozart effect (education psychology) (popular psychology) (psychological theories) (Wolfgang Amadeus Mozart)
*
Mpemba effect (phase changes) (physical paradoxes) (thermodynamics)
*
Mullins effect (rubber properties)
*
Multiple-effect humidification
Multiple-effect humidification (MEH) is a method used for thermal desalination of sea water. It uses multiple evaporation–condensation cycles at separate temperature levels to minimize the total energy consumption
Energy consumption is the am ...
(drinking water) (water supply) (water treatment)
*
Munroe effect (explosive weapons) (explosives)
N
*
Name-letter effect
The name-letter effect is the tendency of people to prefer the letters in their name over other letters in the alphabet. Whether subjects are asked to rank all letters of the alphabet, rate each of the letters, choose the letter they prefer out ...
(psychology)
*
Negative (positive) contrast effect (psychology)
*
Negativity effect (cognitive biases) (psychological theories)
*
Neglected firm effect (business analysis)
*
Nernst effect (electrodynamics) (thermodynamics)
*
Network effect (business models) (economics effects) (information technology) (monopoly
conomics (networks) (transport economics)
*
Non-thermal microwave effect Non-thermal microwave effects or specific microwave effects have been posited in order to explain unusual observations in microwave chemistry. The main effect of the absorption of microwaves by most materials is heating; the random motion of the co ...
(chemical kinetics)
*
Nordtvedt effect (astronomy) (astrophysics) (effects of gravitation) (relativity) (theoretical physics)
*
Novaya Zemlya effect (arctic) (atmospheric optical phenomena) (atmospheric science) (Novaya Zemlya) (solar phenomena)
*
Novelty effect (learning) (psychology)
*
Nuclear Overhauser effect (chemical physics) (nuclear magnetic resonance) (physical chemistry) (spectroscopy)
*
Numerosity adaptation effect
The numerosity adaptation effect is a perceptual phenomenon in numerical cognition which demonstrates non-symbolic numerical intuition and exemplifies how numerical percepts can impose themselves upon the human brain automatically. This effect ...
(cognitive science) (optical illusions) (perception)
*
Nut Island effect The Nut Island effect describes an organizational behavior phenomenon in which a team of skilled employees becomes isolated from distracted top managers resulting in a catastrophic loss of the ability of the team to perform an important mission. The ...
(human resource management) (organizational studies and human resource management)
O
*
Oberth effect (physics)
*
Observer effect (information technology) (computer programming)
*
Observer effect (physics)
In physics, the observer effect is the disturbance of an observed system by the act of observation. This is often the result of instruments that, by necessity, alter the state of what they measure in some manner. A common example is checking the ...
(physics)
*
Observer-expectancy effect (cognitive biases) (cognitive psychology)
*
Occlusion effect (biology) (otology)
*
Octave effect (effects units)
*
Okorokov effect (physics)
*
Oligodynamic effect (biology and pharmacology of chemical elements)
*
Online disinhibition effect (Internet culture) (psychology)
*
Onnes effect (condensed matter physics) (fluid mechanics) (helium)
*
Opposition effect (astronomy) (optical phenomena) (observational astronomy) (radiometry) (scattering, absorption and radiative transfer
ptics
*
Osborne effect (marketing)
*
Ostrich effect (adages)
*
Ouzo effect (Colloidal chemistry) (Chemical mixtures) (Condensed matter physics) (Soft matter) (Fluid dynamics)
*
Overconfidence effect (cognitive biases) (psychological theories)
*
Overjustification effect (educational psychology) (psychological theories) (psychology)
*
Overview effect (spaceflight) (transcendence) (psychology)
P
*
Pandemonium effect (gamma spectroscopy)
*
Partner effects (economics) (sociology)
*
Paschen–Back effect
The Zeeman effect (; ) is the effect of splitting of a spectral line into several components in the presence of a static magnetic field. It is named after the Dutch physicist Pieter Zeeman, who discovered it in 1896 and received a Nobel prize ...
(atomic physics) (atomic, molecular, and optical physics) (magnetism)
*
Pasteur effect (beer and brewery) (biochemistry) (fermentation) (metabolism)
*
Paternal effect – (developmental biology)
*
Pauli effect
The Pauli effect or Pauli's device corollary is the supposed tendency of technical equipment to encounter critical failure in the presence of certain people. The term was coined after mysterious anecdotal stories involving Austrian theoretical phy ...
(experimental physics) (parapsychology) (psychokinesis)
*
Payne effect (rubber properties)
*
Pearson–Anson effect (electronics)
*
Peltier–Seebeck effect (thermoelectric effect) (electricity) (HVAC) (physical phenomena) (thermodynamics)
*
Peltzman effect (economics of regulation) (University of Chicago)
*
Penn effect (economics effects)
*
Petkau effect (radiobiology)
*
Phaser (effect)
A phaser is an electronic sound processor used to filter a signal, and it has a series of troughs in its frequency-attenutation graph. The position (in Hz) of the peaks and troughs are typically modulated by an internal low-frequency oscil ...
(audio effects) (effects units)
*
Phillips effect (employment) (inflation)
*
Photoacoustic Doppler effect (Doppler effects) (radar signal processing) (radio frequency propagation) (wave mechanics)
*
Photoelectric effect
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons. The phenomenon is studied in condensed matter physics, and solid stat ...
(Albert Einstein) (electrical phenomena) (foundational quantum physics)
*
Photorefractive effect (nonlinear optics)
*
Photothermal effect (particle physics) (photochemistry) (physics)
*
Picture superiority effect (cognitive biases) (educational psychology) (memory biases) (psychological theories)
*
Piezoresistive effect (electrical phenomena)
*
Pigou effect (economics effects)
*
Pioneer effect (astrodynamics) (pioneer program)
*
Placebo effect
A placebo ( ) is a substance or treatment which is designed to have no therapeutic value. Common placebos include inert tablets (like sugar pills), inert injections (like saline), sham surgery, and other procedures.
In general, placebos can aff ...
(bioethics) (clinical research) (experimental design) (history of medicine) (Latin medical phrases) (Latin words and phrases) (medical ethics) (medical terms) (medicinal chemistry) (mind–body interventions) (pharmacology) (psychological theories) (research methods) (theories)
*
Plasma effect
The plasma effect is a computer-based visual effect animated in real-time. It uses cycles of changing colours warped in various ways to give an illusion of liquid, organic movement.
Plasma was the name of a VGA graphics demo created by Bret ...
(demo effects)
*
Plateau effect (systems science) (metaphors referring to places)
*
Plummer effect (iodine) (medicine)
*
Pockels effect
The Pockels effect or Pockels electro-optic effect, named after Friedrich Carl Alwin Pockels (who studied the effect in 1893), changes or produces birefringence in an optical medium induced by an electric field. In the Pockels effect, also known ...
(cryptography) (nonlinear optics) (polarization)
*
Polar effect (physical organic chemistry)
*
Polar effect (genetics) (genetics)
*
Portevin–Le Chatelier effect (engineering) (materials science)
*
Position-effect variegation (genetics)
*
Positivity effect (aging) (cognition) (cognitive biases) (memory) (memory biases) (psychological theories) (psychology)
*
Poynting effect (gases)
*
Poynting–Robertson effect (celestial mechanics)
*
Practical effect (special effects)
*
Pratfall effect (psychology)
*
Precedence effect (acoustics) (sound perception)
*
Primakoff effect (particle physics)
*
Priority effect (ecology)
*
Probe effect (software development philosophies) (system administration)
*
Proteus effect (consciousness) (psychology)
*
Proximity effect (atomic physics)
Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. Atomic physics typically refers to the study of atomic structure and the interaction between atoms. It is primarily concerned wit ...
(nuclear physics) (physics)
*
Proximity effect (audio) The proximity effect in audio is an increase in bass or low frequency response when a sound source is close to a directional or cardioid microphone. (acoustics)
*
Proximity effect (electromagnetism) (electrical engineering)
*
Proximity effect (electron beam lithography) (condensed matter physics)
*
Proximity effect (superconductivity) (superconductivity)
*
Pseudocertainty effect
*
Pulfrich effect (3D imaging) (optical illusions)
*
Purkinje effect (optical illusions) (perception) (vision)
*
Pygmalion effect
The Pygmalion effect, or Rosenthal effect, is a psychological phenomenon in which high expectations lead to improved performance in a given area. The effect is named for the Greek myth of Pygmalion, the sculptor who fell so much in love with the ...
(cognitive biases)
Q
*
QMR effect
Quadratic magnetic rotation (also known as QMR or QMR effect) is a type of magneto-optic effect, discovered in the mid 1980s by a team of Ukrainian physicists. QMR, like the Faraday effect, establishes a relationship between the magnetic field and ...
(electric and magnetic fields in matter) (magnetism) (optics) (optical phenomena)
*
Quantum confined stark effect (quantum mechanics)
*
Quantum Hall effect
The quantum Hall effect (or integer quantum Hall effect) is a quantized version of the Hall effect which is observed in two-dimensional electron systems subjected to low temperatures and strong magnetic fields, in which the Hall resistance exhib ...
(Hall effect) (condensed matter physics) (quantum electronics) (spintronics)
*
Quantum Zeno effect
The quantum Zeno effect (also known as the Turing paradox) is a feature of quantum-mechanical systems allowing a particle's time evolution to be slowed down by measuring it frequently enough with respect to some chosen measurement setting.
Some ...
(quantum measurement)
R
*
Raman effect (physics)
*
Ramp effect (drug addiction) (drug rehabilitation)
*
Ramsauer–Townsend effect (physical phenomena) (scattering)
*
Ransom note effect (typography)
*
Rashomon effect
The Rashomon effect is a storytelling and writing method in cinema in which an event is given contradictory interpretations or descriptions by the individuals involved, thereby providing different perspectives and points of view of the same inciden ...
(psychology)
*
Ratchet effect (game theory)
*
Rear projection effect (special effects)
*
Rebound effect (medical sign)
*
Rebound effect (conservation) (economics paradoxes) (energy) (energy conservation)
*
Red-eye effect (science of photography)
*
Relativistic Doppler effect
The relativistic Doppler effect is the change in frequency (and wavelength) of light, caused by the relative motion of the source and the observer (as in the classical Doppler effect), when taking into account effects described by the special the ...
(Doppler effects) (special relativity)
*
Renner–Teller effect (molecular physics)
*
Reverse Cerenkov effect (physics)
*
Reverse short-channel effect (transistors)
*
Ringelmann effect (social psychology)
*
Ripple effect
A ripple effect occurs when an initial disturbance to a system propagates outward to disturb an increasingly larger portion of the system, like ripples expanding across the water when an object is dropped into it.
The ripple effect is often use ...
(education) (sociology)
*
Robin Hood effect (income distribution) (Robin Hood) (socioeconomics) (taxation)
*
Roe effect (abortion debate) (abortion in the United States)
*
Root effect (fish) (hemoproteins) (respiratory physiology)
*
Rope trick effect (nuclear weapons)
*
Rossiter–McLaughlin effect
The Rossiter–McLaughlin effect is a spectroscopic phenomenon observed when an object moves across the face of a star.
Description
The Rossiter–McLaughlin effect is a spectroscopic phenomenon observed when either an eclipsing binary's second ...
(Doppler effects) (extrasolar planets) (spectroscopy) (star systems)
*
Rusty bolt effect
The rusty bolt effect is a form of radio interference due to interactions of the radio waves with dirty connections or corroded parts.Lui, P.L., ''Passive intermodulation interference in communication systems,'' IEEE Electronics & Communication Eng ...
(radio electronics)
*
Russ Christ effect (PV rejection profile)
S
*
Sabattier effect (solarization) (photographic processes) (science of photography)
*
Sachs–Wolfe effect (astronomy) (physical cosmology)
*
Sagnac effect
The Sagnac effect, also called Sagnac interference, named after French physicist Georges Sagnac, is a phenomenon encountered in interferometry that is elicited by rotation. The Sagnac effect manifests itself in a setup called a ring interferomet ...
(optics) (relativity)
*
Sailing Ship Effect
The sailing ship effect is a phenomenon by which the introduction of a new technology to a market accelerates the innovation of an incumbent technology. Despite the fact that the term was coined by W.H. Ward in 1967 the concept was made clear much ...
(business) (economics)
*
Samba effect
The samba effect is a nick name for the financial crisis in Brazil in 1999 where there was a 35% drop in the value of the Brazilian real. The effect was caused by the 1997 Asian financial crisis, which led Brazil to increase interest rates and t ...
(Brazil) (economy of Brazil) (history of Brazil)
*
Sandbox effect (Internet technology) (search engine optimization)
*
Scharnhorst effect (quantum field theory)
*
Schottky effect (diodes)
*
Schwinger effect (particle physics) (hypothetical processes) (quantum electrodynamics)
*
Screen-door effect (display technology) (technology)
*
Second gas effect (anesthesia)
*
Second-system effect (software development)
*
Seeliger effect (astronomy) (observational astronomy)
*
Serial position effect
Serial-position effect is the tendency of a person to recall the first and last items in a series best, and the middle items worst. The term was coined by Hermann Ebbinghaus through studies he performed on himself, and refers to the finding that r ...
(cognitive biases) (psychological theories) (psychologicy)
*
Shaft effect (motorcycle)
*
Shapiro effect
The Shapiro time delay effect, or gravitational time delay effect, is one of the four classic solar-system tests of general relativity. Radar signals passing near a massive object take slightly longer to travel to a target and longer to return tha ...
(effects of gravitation)
*
Shielding effect (atomic, molecular, and optical physics) (atomic physics) (chemistry) (quantum chemistry)
*
Shower-curtain effect (fluid dynamics)
*
Shubnikov–de Haas effect (science)
*
Side effect (computer science) (computer programming)
*
Side effect
In medicine, a side effect is an effect, whether therapeutic or adverse, that is secondary to the one intended; although the term is predominantly employed to describe adverse effects, it can also apply to beneficial, but unintended, consequence ...
(disambiguation)
*
Signor–Lipps effect
The Signor–Lipps effect is a paleontological principle proposed in 1982 by Philip W. Signor and Jere H. Lipps which states that, since the fossil record of organisms is never complete, neither the first nor the last organism in a given taxon w ...
(extinction) (fossils) (paleontology)
*
Silk screen effect (technology)
*
Silo effect (management) (systems theory)
*
Simon effect (psychology)
*
Simpson's paradox aka Yule–Simpson effect (probability) (statistics)
*
Skin effect
Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor and decreases exponentially with greater depths in the cond ...
(electronics)
*
Slashdot effect (denial-of-service attacks)(Internet terminology) (Slashdot)
*
Sleeper effect (social psychology)
*
Smith–Purcell effect The Smith–Purcell effect was the precursor of the free-electron laser (FEL). It was studied by Steve Smith, a graduate student under the guidance of Edward Purcell. In their experiment, they sent an energetic beam of electrons very closely parall ...
(physics) (quantum optics)
*
Snackwell effect (consumer behaviour) (psychology)
*
Snob effect
The snob effect is a phenomenon described in microeconomics as a situation where the demand for a certain good by individuals of a higher income level is inversely related to its demand by those of a lower income level. The "snob effect" contrasts ...
(consumer theory) (economics and finance)
*
Snowball effect (language) (metaphors)
*
Somogyi effect Chronic Somogyi rebound is a contested explanation of phenomena of elevated blood sugars experienced by diabetics in the morning. Also called the Somogyi effect and posthypoglycemic hyperglycemia, it is a rebounding high blood sugar that is a respon ...
(diabetes)
*
Sound effect
A sound effect (or audio effect) is an artificially created or enhanced sound, or sound process used to emphasize artistic or other content of films, television shows, live performance, animation, video games, music, or other media. Traditi ...
(film techniques) (sound effects) (sound production) (special effects)
*
Southwest effect, The (airline terminology) (Southwest Airlines)
*
Spacing effect (cognitive biases) (educational psychology) (psychological theories)
*
Special effect
Special effects (often abbreviated as SFX, F/X or simply FX) are illusions or visual tricks used in the theatre, film, television, video game, amusement park and simulator industries to simulate the imagined events in a story or virtual w ...
(animation) (special effects)
*
Spin Hall effect (condensed matter physics) (Hall effect) (physics) (spintronics)
*
Spoiler effect
Vote splitting is an electoral effect in which the distribution of votes among multiple similar candidates reduces the chance of winning for any of the similar candidates, and increases the chance of winning for a dissimilar candidate.
Vote sp ...
(psephology) (voting theory)
*
Stack effect
*
Stark effect (atomic physics) (foundational quantum physics) (physical phenomena)
*
Stars (shader effect) (3D computer graphics) (computer graphics) (demo effects)
*
Status effect (video game gameplay)
*
Stewart–Tolman effect The Stewart–Tolman effect is a phenomenon in electrodynamics caused by the finite mass of electrons in conducting metal, or, more generally, the finite mass of charge carriers in an electrical conductor.
It is named after T. Dale Stewart and ...
(electrodynamics)
*
Stock sound effect (film and video technology) (film and video terminology) (film terminology)
*
Storage effect (demography) (population ecology)
*
Streisand effect (dynamic lists) (eponyms) (slang)
*
Stroop effect (perception) (psychological tests)
*
Steric effect (chemical kinetics) (chemical reactions) (collision theory) (molecular geometry) (stereochemistry)
*
Subadditivity effect
The subadditivity effect is the tendency to judge probability of the whole to be less than the probabilities of the parts.
Example
For instance, subjects in one experiment judged the probability of death from cancer in the United States was 18% ...
(cognitive biases)
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Subject-expectancy effect (cognitive biases)
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Sunyaev–Zel'dovich effect (physical cosmology) (radio astronomy)
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SVG filter effect
SVG filter effects are effects applied to Scalable Vector Graphics (SVG) files. SVG is an open-standard XML format for two-dimensional vector graphics as defined by the World Wide Web Consortium
The World Wide Web Consortium (W3C) is the m ...
(computer graphics) (computer graphics techniques) (image processing) (Scalable Vector Graphics)
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Szilard–Chalmers effect (nuclear chemistry)
T
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Tamagotchi effect
The Tamagotchi effect is the development of emotional attachment with machines, robots or software agents. It has been noticed that humans tend to attach emotionally to things which otherwise do not have any emotions. For example, there are inst ...
(psychology)
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Tanada effect (botany)
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Tanzi effect (taxation)
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Telescoping effect (memory biases) (psychology)
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Testing effect The testing effect (also known as retrieval practice, active recall, practice testing, or test-enhanced learning) suggests long-term memory is increased when some of the learning period is devoted to retrieving information from memory. It is diffe ...
(educational psychology) (memory)
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Tetris effect
The ''Tetris'' effect (also known as ''Tetris'' syndrome) occurs when people devote so much time and attention to an activity that it begins to pattern their thoughts, mental images, and dreams. It takes its name from the video game '' Tetris''. ...
(memory) (Tetris)
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Thatcher effect (vision)
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Therapeutic effect
Therapeutic effect refers to the response(s) after a treatment of any kind, the results of which are judged to be useful or favorable. This is true whether the result was expected, unexpected, or even an unintended consequence. An adverse effect (i ...
(medical treatment) (pharmacology)
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Thermal flywheel effect
In building design, thermal mass is a property of the mass of a building that enables it to store heat and provide inertia against temperature fluctuations. It is sometimes known as the thermal flywheel effect. The thermal mass of heavy structur ...
(heat) (thermodynamics)
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Thermal Hall effect (condensed matter) (Hall effect) (superconductivity)
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Third-person effect (media studies)
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Thorpe–Ingold effect (chemical kinetics) (organic chemistry)
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Threshold effect (particle physics) (physics) (renormalization group)
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Tinkerbell effect The Tinkerbell effect is an American English expression describing things that are thought to exist only because people believe in them. The effect is named after Tinker Bell, the fairy in the play ''Peter Pan'', who is revived from near death by th ...
(sociology)
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Tocqueville effect (sociology)
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Training effect (cardiovascular system) (exercise physiology) (medicine) (respiratory system) (sports terminology)
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Trans effect In inorganic chemistry, the trans effect is the increased lability of ligands that are trans to certain other ligands, which can thus be regarded as trans-directing ligands. It is attributed to electronic effects and it is most notable in square p ...
(coordination chemistry)
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Transformer effect (electrodynamics)
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Transverse flow effect (aerodynamics)
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Trench effect (fire)
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Triboelectric effect
The triboelectric effect (also known as triboelectric charging) is a type of contact electrification on which certain materials become electrically charged after they are separated from a different material with which they were in contact. Ru ...
(electrical phenomena) (electricity)
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Trickle up effect
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Trickle-down effect
The trickle-down effect is a model of product adoption in marketing that affects many consumer goods and services.
It states that fashion flows vertically from the upper classes to the lower classes within society, each social class influenced b ...
(marketing)
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Twisted nematic field effect (display technology) (liquid crystal displays) (liquid crystals)
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Twomey effect (air pollution) (atmospheric radiation) (clouds, fog and precipitation)
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Tyndall effect (physical phenomena) (scattering)
U
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Umov effect The Umov effect, also known as Umov's law, is a relationship between the albedo of an astronomical object, and the degree of polarization of light reflecting off it. The effect was discovered by the Russian physicist Nikolay Umov in 1905, and can ...
(astronomy) (observational astronomy) (planetary science)
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Unruh effect
The Unruh effect (also known as the Fulling–Davies–Unruh effect) is a kinematic prediction of quantum field theory that an accelerating observer will observe a thermal bath, like blackbody radiation, whereas an inertial observer would observe ...
(quantum field theory) (thermodynamics)
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Urban heat island effect (climate change feedbacks and causes) (climate forcing)
V
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Vandenbergh effect The Vandenbergh effect is a phenomenon reported by J.G. Vandenbergh ''et al.'' in 1975, in which an early induction of the first estrous cycle in prepubertal female mice occurs as a result of exposure to the pheromone-laden urine of a sexually matur ...
(biology)
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Vaporific effect (fire)
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Veblen effect (consumer theory) (goods)
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Venturi effect
The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. The Venturi effect is named after its discoverer, the 18th century Italian physicist, Giovanni Battista ...
(fluid dynamics)
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Venus effect (artistic techniques) (cognitive science) (film techniques) (mirrors) (psychology)
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Visual effects
Visual effects (sometimes abbreviated VFX) is the process by which imagery is created or manipulated outside the context of
a live-action shot in filmmaking and video production.
The integration of live-action footage and other live-action foota ...
(computer generated imagery)
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Visual effects art director
In the context of film and television production, a visual effects art director is responsible for conceptualizing and designing visual effects
Visual effects (sometimes abbreviated VFX) is the process by which imagery is created or manipulated ...
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Voigt effect (magnetism) (optics)
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Von Restorff effect (cognitive biases) (psychological theories)
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Vroman effect (molecular and cellular biology)
W
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Wagon-wheel effect (optical illusion)
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Wahlund effect (evolution) (population genetics)
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Walker effect (illusions of self-motion) (spatial misconception)
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Walkman effect
The Walkman effect refers to the way music listened to via headphones allows the user to gain more control over their environment. It was coined by International Research Center for Japanese Studies Professor Shuhei Hosokawa in an article of th ...
(computing and society) (technology)
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Wallace effect (evolutionary biology) (speciation)
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Warburg effect (biochemistry) (oncology) (photosynthesis)
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Wealth effect The wealth effect is the change in spending that accompanies a change in perceived wealth.
Usually the wealth effect is positive: spending changes in the same direction as perceived wealth.
Effect on individuals
Changes in a consumer's wealth caus ...
(economics and finance) (wealth)
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Weapons effect (gun politics)
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Weathervane effect (aviation terminology)
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Weissenberg effect (physics)
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Westermarck effect (psychology) (incest)
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Wet floor effect (computer graphic techniques) (computer graphics) (Web 2.0)
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Whitten effect (menstruation)
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Wien effect (electrochemistry)
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Wigner effect (condensed matter physics) (nuclear technology) (physical phenomena) (radiation effects)
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Wilson effect
In astronomy, the Wilson effect is the perceived depression of a sunspot's umbra, or center, in the Sun's photosphere. The magnitude of the depression is difficult to determine, but may be as large as 1,000 km.
Sunspots result from the blockage ...
(astronomy) (Sun)
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Wilson–Bappu effect (physics)
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Wimbledon effect
The Wimbledon Effect (Japanese: ウィンブルドン現象, rōmaji: ''Uinburudon Genshō'', literally "Wimbledon Phenomenon") is a chiefly British and Japanese analogy, which possibly originated in Japan, that compares the tennis fame of the Wi ...
(economic theories) (economy of Japan) (economy of London)
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Windkessel effect (physiology)
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Withgott effect (linguistics) (phonetics)
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Wolf effect (scattering) (spectroscopy)
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Wolff–Chaikoff effect (iodine) (medicine)
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Woozle effect
The Woozle effect, also known as evidence by citation, occurs when a source is widely cited for a claim it does not adequately support, giving said claim undeserved credibility. If replication studies are not done and no one notices that a key ...
(psychology) (scientific method) (sociology)
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Word superiority effect (cognitive science)
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Worse-than-average effect (cognitive biases) (psychological theories) (social psychology)
X
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Xenia effect (agriculture) (genetics)
Y
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Yarkovsky effect
The Yarkovsky effect is a force acting on a rotating body in space caused by the anisotropic emission of thermal photons, which carry momentum. It is usually considered in relation to meteoroids or small asteroids (about 10 cm to 10 km ...
(celestial mechanics)
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Yarkovsky–O'Keefe–Radzievskii–Paddack effect (celestial mechanics)
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Yule–Simpson effect
Simpson's paradox is a phenomenon in probability and statistics in which a trend appears in several groups of data but disappears or reverses when the groups are combined. This result is often encountered in social-science and medical-science s ...
(probability) (statistics)
Z
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Zeeman effect
The Zeeman effect (; ) is the effect of splitting of a spectral line into several components in the presence of a static magnetic field. It is named after the Dutch physicist Pieter Zeeman, who discovered it in 1896 and received a Nobel priz ...
(atomic physics) (foundational quantum physics) (magnetism) (physical phenomena)
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Zeigarnik effect (cognitive biases) (educational psychology) (learning) (psychological theories)
{{DEFAULTSORT:Effects
Science-related lists
Technical terminology
Scientific_phenomena