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Droplets (other)
Droplet ("little Drop (liquid), drop") and droplets (plural form) may refer to: *Water droplet, a small column of water (liquid) *Oil droplet, a small column of oil (liquid) Technology *Acoustic droplet vaporization, the phase-transitioned of liquid droplets into gas bubbles by means of ultrasound *Acoustic droplet ejection, move of fluid drops without any physical contact by means of ultrasound *Droplet-shaped wave, casual localized solutions of the wave equation *Electrodynamic droplet deformation, liquid droplets suspended in a liquid exposed to an oscillating electric field *Electron-hole droplets, condensed phase of excitons in semiconductors *Liquid droplet radiator, a proposed lightweight radiator *Droplets (programming environment), a computer programming environment *Droplets, the name for virtual private servers from DigitalOcean *A kind of applet in Apple's scripting language AppleScript#Applets_and_Droplets, AppleScript Biology and medicine *Lipid droplet, lipid-rich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drop (liquid)
A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces. A drop may form when liquid accumulates at the lower end of a tube or other surface boundary, producing a hanging drop called a pendant drop. Drops may also be formed by the condensation of a vapor or by atomizer nozzle, atomization of a larger mass of solid. Water vapor will condense into droplets depending on the temperature. The temperature at which droplets form is called the dew point. Surface tension Liquid forms drops because it exhibits surface tension. A simple way to form a drop is to allow liquid to flow slowly from the lower end of a vertical tube of small diameter. The surface tension of the liquid causes the liquid to hang from the tube, forming a pendant. When the drop exceeds a certain size it is no longer stable and detaches itself. The falling liquid is also a drop held together by surface tension. Viscosity and pitch drop experiments Some substa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Droplet
A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces. A drop may form when liquid accumulates at the lower end of a tube or other surface boundary, producing a hanging drop called a pendant drop. Drops may also be formed by the condensation of a vapor or by atomization of a larger mass of solid. Water vapor will condense into droplets depending on the temperature. The temperature at which droplets form is called the dew point. Surface tension Liquid forms drops because it exhibits surface tension. A simple way to form a drop is to allow liquid to flow slowly from the lower end of a vertical tube of small diameter. The surface tension of the liquid causes the liquid to hang from the tube, forming a pendant. When the drop exceeds a certain size it is no longer stable and detaches itself. The falling liquid is also a drop held together by surface tension. Viscosity and pitch drop experiments Some substances that appe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oil Droplet
Oil droplets are found in the eyes of some animals, being located in the photoreceptor cells. They are especially common in the eyes of diurnal (active during the day) reptiles (e.g. lizards, turtles) and birds (see bird vision), though are present in other taxa such as lungfish. They are found in cone cells far more often than in rods, suggesting a role in colour vision. Occurrence in rod cells may imply that they have been modified from a cone cell ancestor. They occasionally occur in double cones/double rods. Some oil droplets are coloured, while others appear colourless. They are located in the cone inner segment, where they intercept and filter light before it can pass through to the cone outer segment where the opsins are, the molecules that sense light. The adaptive advantage of oil droplets is not firmly established. Coloured oil droplets have a cost in that they reduce the amount of light available to the visual system. They also reduce the overlap in spectral sensiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustic Droplet Vaporization
Acoustic droplet vaporization (ADV) is the process by which superheated liquid droplets are phase-transitioned into gas bubbles by means of ultrasound. Perfluorocarbons and halocarbons are often used for the dispersed medium, which forms the core of the droplet. The surfactant, which forms a stabilizing shell around the dispersive medium, is usually composed of albumin or lipids. There exist two main hypothesis that explain the mechanism by which ultrasound induces vaporization. One poses that the ultrasonic field interacts with the dispersed medium so as to cause vaporization in the bubble core. The other suggests that shockwaves from inertial cavitation, occurring near or within the droplet, cause the dispersed medium to vaporize. See also * Acoustic droplet ejection Acoustic droplet ejection (ADE) uses a pulse of ultrasound to move low volumes of fluids (typically nanoliters or picoliters) without any physical contact. This technology focuses acoustic energy into a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustic Droplet Ejection
Acoustic droplet ejection (ADE) uses a pulse of ultrasound to move low volumes of fluids (typically nanoliters or picoliters) without any physical contact. This technology focuses acoustic energy into a fluid sample in order to eject droplets as small as a picoliter. ADE technology is a very gentle process, and it can be used to transfer proteins, high molecular weight DNA and live cells without damage or loss of viability. This feature makes the technology suitable for a wide variety of applications including proteomics and cell-based assays. History Acoustic droplet ejection was first reported in 1927 by Robert W. Wood and Alfred Loomis, who noted that when a high-power acoustic generator was immersed in an oil bath, a mound formed on the surface of the oil and, like a “miniature volcano,” ejected a continuous stream of droplets. Ripples that appear in a glass of water placed on a loud speaker show that acoustic energy can be converted to kinetic energy in a fluid. If th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Droplet-shaped Wave
In physics, droplet-shaped waves are casual localized solutions of the wave equation closely related to the X-shaped waves, but, in contrast, possessing a finite support. A family of the droplet-shaped waves was obtained by extension of the "toy model" of X-wave generation by a superluminal point electric charge (tachyon) at infinite rectilinear motion to the case of a line source pulse started at time . The pulse front is supposed to propagate with a constant superluminal velocity (here is the speed of light, so ). In the cylindrical spacetime coordinate system , originated in the point of pulse generation and oriented along the (given) line of source propagation (direction ''z''), the general expression for such a source pulse takes the form : s(\tau ,\rho ,z) = \frac J(\tau ,z) H(\beta \tau -z) H(z), where and are, correspondingly, the Dirac delta and Heaviside step functions while is an arbitrary continuous function representing the pulse shape. Notably, for , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrodynamic Droplet Deformation
Electrohydrodynamic droplet deformation is a phenomenon that occurs when liquid droplets suspended in a second immiscible liquid are exposed to an oscillating electric field. Under these conditions, the droplet will periodically deform between prolate and oblate ellipsoidal shapes. The characteristic frequency and magnitude of the deformation is determined by a balance of electrodynamic, hydrodynamic, and capillary stresses acting on the droplet interface. This phenomenon has been studied extensively both mathematically and experimentally because of the complex fluid dynamics that occur. Characterization and modulation of electrodynamic droplet deformation is of particular interest for engineering applications because of the growing need to improve the performance of complex industrial processes(e.g. two-phase cooling, crude oil demulsification). The primary advantage of using oscillatory droplet deformation to improve these engineering processes is that the phenomenon does not re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron-hole Droplets
Electron-hole droplets are a condensed phase of excitons in semiconductors. The droplets are formed at low temperatures and high exciton densities, the latter of which can be created with intense optical excitation or electronic excitation in a p-n junction. Discovery Evidence for electron-hole droplets was first observed by J. R. Haynes of Bell Labs in 1966, who observed a frequency shift in the spectrum radiated by silicon at low temperatures (~3 K). The shift was attributed to the recombination of a bound state of two exciton An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb force. It is an electrically neutral quasiparticle that exists in insulators, semiconductors and some liquids. The ...s (electron-hole pairs). V. M. Asnin and A. A. Rogachev discovered metallic conduction in germanium at low temperatures when the density of excitons exceeded the amount required to transition into a metallic s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Droplet Radiator
The liquid droplet radiator (LDR) or previously termed liquid droplet stream radiator is a proposed lightweight radiator for the dissipation of waste heat generated by power plants, propulsion or spacecraft systems in space. Background An advanced or future space mission must have a power source or propulsion that will require the rejection of waste heat. Disposing large quantities of waste heat must be considered in order to realize a large-space structure (LSS) that handle high power such as a nuclear reactor or a space solar power satellite (SPS). Such space systems require advanced high-temperature thermal control systems. Liquid metal heat pipes with conventional radiators are considered ideally suited for such applications. However, the required radiator surface area is huge, hence, the system mass is very large. The liquid droplet radiator (LDR) has an advantage in terms of the rejected heat power-weight ratio. The results of the studies indicate that for rejection te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Droplets (programming Environment)
A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces. A drop may form when liquid accumulates at the lower end of a tube or other surface boundary, producing a hanging drop called a pendant drop. Drops may also be formed by the condensation of a vapor or by atomization of a larger mass of solid. Water vapor will condense into droplets depending on the temperature. The temperature at which droplets form is called the dew point. Surface tension Liquid forms drops because it exhibits surface tension. A simple way to form a drop is to allow liquid to flow slowly from the lower end of a vertical tube of small diameter. The surface tension of the liquid causes the liquid to hang from the tube, forming a pendant. When the drop exceeds a certain size it is no longer stable and detaches itself. The falling liquid is also a drop held together by surface tension. Viscosity and pitch drop experiments Some substances that appear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DigitalOcean
DigitalOcean Holdings, Inc. () is an American multinational technology company and cloud service provider. The company is headquartered in New York City, New York, USA, with 15 globally distributed data centers worldwide. DigitalOcean provides developers, startups, and SMBs with cloud infrastructure-as-a-service platforms. DigitalOcean also runHacktoberfest a one month-long celebration of open source software held in October. Each year it partners with different software companies including GitHub, Twilio, Dev.to, Intel, AppWrite, and DeepSource. History In 2003, Ben Uretsky and Moisey Uretsky, who founded the ServerStack, a managed hosting business, wanted to create a new product which would combine web hosting and virtual servers and target entrepreneurial with software developers. In 2012, the Uretskys met co-founder Mitch Wainer following Wainer's response to a Craigslist job listing. Mitch Wainer company launched their beta product in January 2012. In mid-2012, the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AppleScript
AppleScript is a scripting language created by Apple Inc. that facilitates automated control over scriptable Mac applications. First introduced in System 7, it is currently included in all versions of macOS as part of a package of system automation tools. The term "AppleScript" may refer to the language itself, to an individual script written in the language, or, informally, to the macOS Open Scripting Architecture that underlies the language. Overview AppleScript is primarily a scripting language developed by Apple to do inter-application communication (IAC) using Apple events. AppleScript is related to, but different from, Apple events. Apple events are designed to exchange data between and control other applications in order to automate repetitive tasks. AppleScript has some processing abilities of its own, in addition to sending and receiving Apple events to applications. AppleScript can do basic calculations and text processing, and is extensible, allowing the use of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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