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Van Der Waals (other)
Van der Waals or Van der Waal may refer to: People * Fransje van der Waals (born 1950), Dutch medical physician * Grace VanderWaal (born 2004), American singer-songwriter * Henk van der Waal (born 1960), Dutch poet * Joan van der Waals (1920–2022), Dutch physicist * Johannes Diderik van der Waals (1837–1923), Dutch physicist * (1912–1950), Dutch spy, in German service during World War II (see Dutch resistance) Physics There are a series of subjects named after Johannes Diderik van der Waals: * Van der Waals force * Van der Waals equation * Van der Waals molecule * Van der Waals radius * Van der Waals surface Other uses * Van der Waals (crater), named after the physicist * Mona Vanderwaal, ''Pretty Little Liars'' character See also *Van der Wal Van der Wal (or van de Wal, Vander Wal, Vanderwal, van de Wall, VanderWaal) is a toponymic surname of Dutch origin. The original bearer of the name may have lived or worked at or near a "wal": a river embankment, quay, or rampart. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fransje Van Der Waals
Fransje van der Waals (born 1950 in Heemstede) is a Dutch medical physician and founder of the non-profit organisation Health oundation. Career After her study at the Faculty of Medicine of the University of Amsterdam, Fransje received her MD degree in 1978 and her PhD from the same university in 1995. In 1981, she was board certified in the Netherlands as general practitioner. In 1987, she became assistant professor and head of the Women's Health Studies Department at the Academic Medical Center of the University of Amsterdam. In the period 1979-2001, Fransje published over 40 articles in peer-reviewed journals and between 1983 and 1997 she also published five books on women's health issues. She also wrote medical columns in ELLE, Marie Claire and Santé magazines on a regular basis and has a weekly radio talk show on health-related subjects. During her entire career, van der Waals has remained active as a general practitioner and has been a partner in a general practice in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grace VanderWaal
Grace Avery VanderWaal (born January 15, 2004) is an American singer, songwriter and actress. She is known for her distinctive vocals and has often accompanied herself on the ukulele. VanderWaal began her musical career by posting videos of her original songs and covers on YouTube and performing at open mic nights near her home in Suffern, New York. In September 2016, at age 12, she won the eleventh season of the NBC competition show ''America's Got Talent'' (''AGT''), performing her original songs. In December 2016, with Columbia Records and Syco Music, she released her debut EP ''Perfectly Imperfect'', which became the best selling EP that year. Her first full-length studio album, '' Just the Beginning'' (2017), debuted at number 22 on the U.S ''Billboard'' 200. She released a second EP, ''Letters Vol. 1'', in 2019. She has performed at the Planet Hollywood Resort & Casino in Las Vegas, Madison Square Garden, the opening and closing of the 2017 Special Olympics World Wint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henk Van Der Waal
Henk van der Waal (born 1960) is a Dutch poet. Early life Van der Waal studied philosophy at the University of Amsterdam. Career Van der Waal has worked as a journalist, a translator and as a teacher at the Gerrit Rietveld Academie. In 1996, he won the C. Buddingh'-prijs for his debut poetry collection ''De windsels van de sfinx'' (1995). His second poetry collection ''Schuldsanering'' (2000) was nominated for the Paul Snoek-poëzieprijs. He was also nominated for the VSB-Poëzieprijs in 2004 for his poetry collection ''De aantochtster'' (2003). In 2012, he won the Ida Gerhardt Poëzieprijs for his poetry collection ''Zelf worden''. The collection was also nominated for the VSB-Poëzieprijs. Van der Waal and Erik Lindner wrote the book ''De kunst van het dichten'', a collection of essays and conversations with other poets, including Nachoem Wijnberg, Anneke Brassinga and Anne Vegter. Van der Waal also published ''Liefdesgeschiedenissen'' in 1991, a Dutch translati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joan Van Der Waals
Joan Henri van der Waals (2 May 1920 – 21 June 2022) was a Dutch physicist. He was professor of experimental physics at Leiden University between 1967 and 1989. He specialized in molecular physics and clathrate hydrates. One of van der Waals's most significant contributions to the study of hydrates was a series of papers between 1953 and 1958, which eventually culminated in the 1959 publication of his paper on the canonical partition function for clathrates, along with J. C. Platteeuw. To create this partition function, van der Waals made a number of simplifying assumptions, most prominently that neighboring guest gas molecules cannot interact and there is a maximum of one guest per cage. Early life Van der Waals was born on 2 May 1920 in Amsterdam. A book on the Bohr model sparked his interest in physics. After finishing his high school in Amsterdam he moved to London to work as an intern-apprentice in a laboratory. When he returned to the Netherlands he started a combined st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Diderik Van Der Waals
Johannes Diderik van der Waals (; 23 November 1837 – 8 March 1923) was a Dutch theoretical physicist and thermodynamicist famous for his pioneering work on the equation of state for gases and liquids. Van der Waals started his career as a school teacher. He became the first physics professor of the University of Amsterdam when in 1877 the old Athenaeum was upgraded to Municipal University. Van der Waals won the 1910 Nobel Prize in physics for his work on the equation of state for gases and liquids. His name is primarily associated with the Van der Waals equation of state that describes the behavior of gases and their condensation to the liquid phase. His name is also associated with Van der Waals forces (forces between stable molecules), with Van der Waals molecules (small molecular clusters bound by Van der Waals forces), and with Van der Waals radii (sizes of molecules). As James Clerk Maxwell said, "there can be no doubt that the name of Van der Waals will soon be among th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Der Waals Force
In molecular physics, the van der Waals force is a distance-dependent interaction between atoms or molecules. Unlike ionic or covalent bonds, these attractions do not result from a chemical electronic bond; they are comparatively weak and therefore more susceptible to disturbance. The van der Waals force quickly vanishes at longer distances between interacting molecules. Named after Dutch physicist Johannes Diderik van der Waals, the van der Waals force plays a fundamental role in fields as diverse as supramolecular chemistry, structural biology, polymer science, nanotechnology, surface science, and condensed matter physics. It also underlies many properties of organic compounds and molecular solids, including their solubility in polar and non-polar media. If no other force is present, the distance between atoms at which the force becomes repulsive rather than attractive as the atoms approach one another is called the van der Waals contact distance; this phenomenon resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Der Waals Equation
In chemistry and thermodynamics, the Van der Waals equation (or Van der Waals equation of state) is an equation of state which extends the ideal gas law to include the effects of interaction between molecules of a gas, as well as accounting for the finite size of the molecules. The ideal gas law treats gas molecules as point particles that interact with their containers but not each other, meaning they neither take up space nor change kinetic energy during collisions (i.e. all collisions are perfectly elastic). The ideal gas law states that the volume ''V'' occupied by ''n'' moles of any gas has a pressure ''P'' at temperature ''T'' given by the following relationship, where ''R'' is the gas constant: :PV=nRT To account for the volume occupied by real gas molecules, the Van der Waals equation replaces V/n in the ideal gas law with (V_m-b), where ''Vm'' is the molar volume of the gas and ''b'' is the volume occupied by the molecules of one mole: :P(V_m - b)=R T The second m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Der Waals Molecule
A Van der Waals molecule is a weakly bound complex of atoms or molecules held together by intermolecular attractions such as Van der Waals forces or by hydrogen bonds. The name originated in the beginning of the 1970s when stable molecular clusters were regularly observed in molecular beam microwave spectroscopy. Examples Examples of well-studied vdW molecules are Ar2, H2-Ar, H2O-Ar, benzene-Ar, (H2O)2, and (HF)2. Others include the largest diatomic molecule: He2 and LiHe. Supersonic beam spectroscopy In (supersonic) molecular beams temperatures are very low (usually less than 5 K). At these low temperatures Van der Waals (vdW) molecules are stable and can be investigated by microwave, far-infrared spectroscopy and other modes of spectroscopy. Also in cold equilibrium gases vdW molecules are formed, albeit in small, temperature dependent concentrations. Rotational and vibrational transitions in vdW molecules have been observed in gases, mainly by UV and IR spectro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Der Waals Radius
The van der Waals radius, ''r'', of an atom is the radius of an imaginary hard sphere representing the distance of closest approach for another atom. It is named after Johannes Diderik van der Waals, winner of the 1910 Nobel Prize in Physics, as he was the first to recognise that atoms were not simply points and to demonstrate the physical consequences of their size through the van der Waals equation of state. van der Waals volume The van der Waals volume, ''V'', also called the atomic volume or molecular volume, is the atomic property most directly related to the van der Waals radius. It is the volume "occupied" by an individual atom (or molecule). The van der Waals volume may be calculated if the van der Waals radii (and, for molecules, the inter-atomic distances, and angles) are known. For a single atom, it is the volume of a sphere whose radius is the van der Waals radius of the atom: V_ = \pi r_^3. For a molecule, it is the volume enclosed by the van der Waals surfac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Der Waals Surface
The Van der Waals surface of a molecule is an abstract representation or model of that molecule, illustrating where, in very rough terms, a surface might reside for the molecule based on the hard cutoffs of Van der Waals radii for individual atoms, and it represents a surface through which the molecule might be conceived as interacting with other molecules. Also referred to as a ''Van der Waals envelope,'' the Van der Waals surface is named for Johannes Diderik van der Waals, a Dutch theoretical physicist and thermodynamicist who developed theory to provide a liquid-gas equation of state that accounted for the non-zero volume of atoms and molecules, and on their exhibiting an attractive force when they interacted (theoretical constructions that also bear his name). Van der Waals surfaces are therefore a tool used in the abstract representations of molecules, whether accessed, as they were originally, via hand calculation, or via physical wood/plastic models, or now digitally, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Der Waals (crater)
Van der Waals is a lunar impact crater on the far side of the Moon. It is a heavily eroded feature with an irregular outer rim. The edge is lowest along the southern side where it is little more than a circular crest along the ground. It is more developed along the northern side, but the rim is notched and rugged. The satellite crater Van der Waals W is attached to the exterior of the northeast, and Van der Waals H intrudes into the rim along the southeast. The interior floor is relatively even and featureless, with only a few tiny craterlets to mark the surface. Nearby craters of note include Clark to the north, Carver to the east, and Pikel'ner to the southeast. About two crater diameters to the west-southwest is Lebedev. Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Van der Waals. References * * * * * * * * * * * * {{refend Impact craters on the Moon Cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mona Vanderwaal
Mona Vanderwaal is a fictional character in the ''Pretty Little Liars'' book series, its television adaptation, and the spin-off TV series '' Pretty Little Liars: The Perfectionists''. In the TV shows, she is portrayed by Janel Parrish. Introduced in ''Pretty Little Liars'' as Hanna Marin's best friend, Mona initially harbors a grudge against the protagonists, using her intelligence and resources to torment them anonymously as "A". In the third season of the TV series, Mona gains a partner who eventually takes control from her. Afterward, she forms an unstable alliance with the protagonists, becoming a victim of her own creation. Considered the most knowledgeable character in the series, Mona is versed in computer hacking, foreign languages, singing, empathy, and manipulation. Though introduced as a villainess, she eventually takes steps toward redemption. Mona is the first 'A' in the show and the book. Initially a supporting player, the TV character gained much popularity among ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
