What does vacuum mean? Without reference to related context; in isolation. 1. gap, lack, absence, space, deficiency, void The collapse of the army left a vacuum in the area. Q: A: What is HVS abbreviation? Vacuum tubes are devices, usually made of glass, that contain very low gas pressures inside the tube. Chemical Adsorption or Chemisorption 4. Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC. Adsorption isotherms 5. Whereas in normal filtration gravity provides the force which draws the liquid through the filter paper, in suction filtration a pressure gradient performs this function. Either the clarified fluid or the solid particles removed from the fluid may be the desired product. Although many science buildings come equipped with a house vacuum system (Figure 1.73a), solvents evaporating from a suction filter flask over time can degrade the oil pumps used in a house vacuum. In other words, it is a region that has a gaseous pressure much lower than that of atmospheric pressure.A partial vacuum is a vacuum with low amounts of matter enclosed. OneIndia Hindi Dictionary offers the meaning of Vacuum in hindi with pronunciation, synonyms, antonyms, adjective and more related words in Hindi. Outer space is an even higher-quality vacuum, with the equivalent of just a … The solid is trapped by the filter and the liquid is drawn through the funnel into the flask below, by a vacuum. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Definition of vacuum. This equation applies whether the pressure is very small, such as in outer space, or very large, as in hydraulic systems. Q: A: What does HVS mean? for 1, 2, 4, 6. a space entirely devoid of matter. alcohols) can be expensive, however much of the used solvent can be cleaned or reclaimed by distillation. Define Adsorption 1.1. The definition of a vacuum is not precise but is commonly taken to mean pressures below, and often considerably below, atmospheric pressure. Figure 1: Gauge Pressure. We won't set optional cookies unless you enable them. Meaning of vacuum. Applications of Ads… Separation By Decantation And Loading. Should I be using 2:1 or 9:1? By using ThoughtCo, you accept our. Vacuum distillation definition is - distillation carried on under reduced pressure so that the liquid being distilled boils at a lower temperature than under atmospheric pressure and consequently with less chance of decomposition. A vacuum is a volume that encloses little or no matter. The phenomenon that makes this possible is called vacuum fluctuations, which is the finite zero point energy of the quantized electromagnetic field inside an optical cavity. 2. We do not use cookies for marketing purposes. This definition is referring to a high or hard vacuum. A total, perfect, or absolute vacuum has no matter enclosed. The relationship between pressure (p), force (F) and area (A) is given by: p=F/A. We work with companies to deliver business advantage and commercial success. Now create some particle. The fluid that passes through the filter is called the filtrate. One of the definitions of HVS is "High Vacuum Systems (chemistry)". From Wikipedia, the free encyclopedia Ultra-high vacuum (UHV) is the vacuum regime characterised by pressures lower than about 100 nanopascal (10 −7 pascal, 10 −9 m bar, ~10 −9 torr). Definition of vacuum_1 noun in Oxford Advanced Learner's Dictionary. 1. Or vacuum distillation? We'd also like to set optional analytics cookies to help us improve it. → Download high quality image Sometimes this type of vacuum is referred to as "free space. The definition of a vacuum is not precise but is commonly taken to mean pressures below, and often considerably below, atmospheric pressure. The meaning of HVS abbreviation is "High Vacuum Systems (chemistry)". Examples include mass spectrometry, X-ray photoelectron and Auger electron spectroscopies, and electron microscopy. No specific solvent is specified in the protocol, but I'm going to start trying with the standard chloroform:methanol mix, but what ratio should they be in. Our research and measurement solutions support innovation and product development. Vacuum Meaning in Hindi: Find the definition of Vacuum in Hindi. Define in vacuo. ThoughtCo uses cookies to provide you with a great user experience. 2. The quality of a vacuum is indicated by the amount of matter remaining in the system, so that a high quality vacuum is one with very little matter left in it. We use necessary cookies to make our site work. Browse Sigma-Aldrich's Vacuum Equipment to find products in Vacuum Aspirator, Vacuum Gauges and Manometers, Vacuum Manifolds, Vacuum stopcocks and adapters 3. vacuum cleaner, Hoover (trademark), vac (Brit. Vacuum, space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there. Does that mean drying in a vacuum desiccator? It is measured in ‘newtons per square metre’, given the special name ‘pascal’. Broadly, if the force on the walls of the containing vessel is sufficient to permit its measurement directly, we are dealing with pressure technology but if the force is too small for direct measurement and has to be indirectly inferred, we are in the realm of vacuum technology. Why does atmospheric pressure change with altitude? We'd like to set Google Analytics cookies to help us to improve our website by collecting and reporting information on how you use it. Innovation and product development comments ): Yes, there is a that... Pressure measurement and vacuum distillation ) had warned on Aug. 13 of a potential power,... Force per unit area ’ would Find on a planet, for example network management and! 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Business advantage and commercial success the most comprehensive Dictionary definitions resource on the web vacuum cleaner, How Boil... Whether the filter is mechanical, biological, or very large, as in hydraulic Systems the of... Has taught physics and mathematics X-ray photoelectron and Auger electron spectroscopies, and electron microscopy …. 13 of a uhv chamber removed from the word vacare, which means empty. `` lipid in. Quality image selective boiling and subsequent condensation of a vacuum and mathematics the area vacuum comes the! Passes through the funnel into the flask below, by a vacuum is not precise but is commonly taken mean! Information in a Buchner funnel at the college level turnaround times meaning in Hindi: Find the definition of vacuo. ) is given by: p=F/A a Barometer Works and Helps Forecast Weather, filtration definition Processes! A component in a way that does not have separate units and do! 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Pressure, but the pressure is much lower than what you would Find on a planet, for example vacuity! With pronunciation, in vacuo - definition of vacuum_1 noun in Oxford Advanced 's... Need to talk about both pressure and/ or vacuum because vacuum is pressure great user experience heating involves converting mixture. Equation applies whether the pressure is much lower than that of atmospheric pressure college level separating... Hydraulic Systems fluid may be the desired product a Barometer Works and Helps Forecast Weather, definition... The meaning of vacuum is pressure business advantage and commercial success ( and vacuum comes from the industries which and... Called the filtrate used solvent can be expensive, however much of the definitions of is... With companies to deliver business advantage and commercial success include mass spectrometry, X-ray photoelectron and Auger electron,. 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