How does a vacuum work?
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Actually, a vacuum cleaner does not suck.  Air is evacuated from inside the cleaner and air pressure of 14 pounds per square inch outside the cleaner is forced up the hose to equalise the pressure difference.  The removal of the air from inside the cleaner is performed at a greater rate than the air rushing up the hose can refill the the cleaner.
993636
As with any system you must first define what are you trying to trap, liquids or gases, this will determine the temperature that you must cool the gas in the system to liquify the gas.\nSomewhere in the system, before you hit the vacuum pump, you have to set a condenser or vacuum trap. The condenser or vacuum trap will be filled with a liquid coolant to lower the temperature of the gas in order to liquify it and precipitate it.\nIn test laboratories they use liquid nitrogen as a coolant and this will trap ethane and methane molecules and liquify them, then you can drain them through a valve.
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NOUN: \n\n1.The act or process of sucking. \n2.A force that causes a fluid or solid to be drawn into an interior space or to adhere to a surface because of the difference between the external and internal pressures. \n\nTRANSITIVE VERB: \n\n1. To draw away or remove by the force of suction: suction fluid from the lungs. \n2. To clean or evacuate (a body cavity, for example) by the force of suction. \n\nADJECTIVE: \n\n1. Creating suction. \n2. Operating or operated by suction.
1043677
A vacuum is a volume of space that is substansively empty of matter, so that gaseous pressure is much less than standard atmospheric pressure. The root of the word vacuum is the Latin adjective vacuus which means "empty," but space can never be perfectly empty. A perfect vacuum, known as "free space", with a gaseous pressure of absolute zero is a philosophical concept with no physical reality, not least because quantum theory predicts that no volume of space is perfectly empty in this way. Physicists often use the term "vacuum" slightly differently. They discuss ideal test results that would occur in a perfect vacuum, which they simply call "vacuum" in this context, and use the term partial vacuum to refer to the imperfect vacua realized in practice.
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a vacuum cleaner. It takes long hours to clean a household nut with a vacuum cleaner, its a breeze.
320335
vacuum\ni used spell check it says so
1160591
That depends on whether or not they're living in a vacuum.
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If the pressure is 0.76m of Hg, it is equivalent to 10.3 m of water. There is a vacuum in the tube above this water height.\n\nHowever, by “vacuum” we mean inside this space, the pressure is low. There will be vapour of water which will have some pressure.\n\nEven in mercury barometer, there will be mercury vapour inside the “Torricelli’s vacuum”.  \n\nThis is the reason that ordinary pump which sucks water from a well or sump is not able to lift water to a height more than 10m from the surface of the water.
627134
Actually, There is no such thing as a true vacuum...Period!\nA true vacuum has never been created, anywhere, where the atomic count is zero.\nThere is always atomic content left to fill the "vacuous" space. No one has ever been able to creat a true vacuum.\n\nContrary to popular belief, empty space is not empty, and it is certainly not a vacuum. \nresearch it, its true.\n"Empty" space actually contains an average of 1 hydrogen atom for every 32 cubic centimeters of space, this data is per NASA.\n\nIn our own Milky Way, space is more dense with 1 hydrogen atom for every 1 cubic centimeter.\n\nSo to answer your question, EMs have never been propagated through a true vacuum that we know of.\n\nOne day the misinformation of space, or anything else, as a true vacuum will finally die out.\n\nhttp://en.wikipedia.org/wiki/vacuum...\n\n\nspread the knowledge
885748
About 1 atom for every 32 cubic centimeters\nActually, There is no such thing as a true vacuum.\nA true vacuum has never been created, anywhere, where the atomic count is zero.\nThere is always atomic content left to fill the "vacuous" space. No one has ever been able to creat a true vacuum.\n(exerpt from a previous answer)\nContrary to popular belief, empty space is not empty, and it is certainly not a vacuum. \nresearch it, its true.\n"Empty" space actually contains an average of 1 hydrogen atom for every 32 cubic centimeters of space, this data is per NASA.\n\nIn our own Milky Way, space is more dense with 1 hydrogen atom for every 1 cubic centimeter.\n\nOne day the misinformation of space, or anything else, as a vacuum will finally die out.\n\nIf you are referring to a vacuum cleaner.... then dirt.\n\nspread the knowledge
585305
I think vacuum cleaners. I think they should be able to run by themselves. They should have sensors so they don't crash into anything. And they could have the house/ appartement map programmed so that it'd know where to go. Ok, so vacuums aren't exactly hand made but still.
613128
Great Question!\nActually, There is no such thing as a true vacuum.\nA true vacuum has never been created, anywhere, where the atomic count is zero.\nThere is always atomic content left to fill the "vacuous" space. No one has ever been able to creat a true vacuum.\n\nContrary to popular belief, empty space is not empty, and it is certainly not a vacuum. \nCheck the Wikipedia link below.\n\nhttp://en.wikipedia.org/wiki/vacuum......\n\n"Empty" space actually contains an average of 1 hydrogen atom for every 32 cubic centimeters of space, this data is per NASA.\n\nIn our own Milky Way, space is more dense with 1 hydrogen atom for every 1 cubic centimeter.\n\nTo answer your question,for space to "warp", according to special relativity, space/time must be flat. The analogy always used in books is that of a bowling ball on a bed sheet, with the bed sheet representing space/time, and the bowling ball representing any mass object.\nNow roll a marble across the bed sheet, and it will follow the curve of the sheet towards to bowling ball. \nBelieve it or not, This is how Einstein envisions gravity as described by his field equations.\n\n\nThis at least describes it based on what is currently accepted in physics.\nHope it helps.
119197
The system uses high voltage to ionize molecules in the air mostly oxygen to ozone. Ions have an electric charge sort of like static electricity they attract dust particles and create a heavier particle that falls out of the air. also dust particles are attracted to the high voltage plates much like your tv screen attracts dust.
464134
Because the release of pressure (or pulling a vacuum)is an endothermic process. This would drop the temperature inside your vacuum chamber. This is a law of physics utilized by refrigeration equipment which basically uses  compression of refrigerant and subsequent release of pressure to cause cooling.
803489
It  is a vacuum although you can find planets, stars, comets, asteroids and other types of bodies in it.
140123
The air passes through a membrane that is charged so that charged particles in the air are attracted to it.  Not only does this move the air, but it takes the particles out of the air.
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Go to:  How stuff works.com