everything abt cryogenics?
107815
Cryogenics is the study of very low temperatures or the production of the same.  Liquified gases, such as liquid nitrogen and liquid helium, are used in many cryogenic applications.  The word cryogenics literally means "the production of icy cold"; however the term is used today as a synonym for the low-temperature state.  How low?  Involving temperatures below –150 °C !  Uses:   \nCryogenic temperatures, usually well below 77 kelvins (−196 °C) are required to operate cryogenic detectors.\nMr. Busch founded a company in Detroit called CryoTech in 1966 and experimented with the possibility of increasing the life of metal tools to anywhere between 200%-400% of the original life expectancy using cryogenic tempering instead of heat treating. \nAnother use of cryogenics is cryogenic fuels. Cryogenic fuels, mainly oxygen and hydrogen, have been used as rocket fuels.
565161
Go here for all kinds of stuff you will want for your field.\n\nhttp://allheart.com/
30315
Well absolute zero is -273.15 C or so, and we have gotten very close to that (within about a tenth of billionth of a degree C). We cannot get any colder than absolute 0. \n\nThere is such a thing as negative temperature, but this is not a case of something being colder than absolute zero, but "hotter than infinite temperature". See the attached web pages.
402010
ok, first of all, get a heatpipe system.  decent cooling and less hassle than liquid. the evercool model is like 30 bucks.  also dont use cheap thermal paste. spend the money for arctic silver. you can get arctic V offa ebay for like 2 bucks, at frys its around 12. also arctic clean is good to take off the old crappy compound. cheap thermal compound SUCKS.
785896
Electronics, Christmas decorations? everything?
801465
The coldest temperature that anything can reach is –273.15 °C. That is called "absolute zero". On the Kelvin scale, which uses the same divisions as the Celsius scale, it is zero, making the point at which water freezes 273.15 °K. Absolute zero is the point at which all atomic movement ceases, i.e. the atoms no longer move relative to one another.\n\nAny material can be heated or cooled to any temperature, as long as enough energy can be added or removed to do so. Materials left in an environment for long enough will reach the same temperature as their surroundings. This is known as reaching equilibrium with the environment.
81122
Frostek might be a good place to start. Go here. http://www.gas-refrigerators.com/frostek.html
487077
well its name is cryogenics and you can find more info here.....\n\nhttp://en.wikipedia.org/wiki/Cryogen
416562
Yes, it is a superconductivity experiment.\n\nTry a Yahoo Search for:\nsuperconductivity experiments\nhttp://search.yahoo.com/search?ei=utf-8&fr=slv1-wdgt&p=superconductivity%20experiments\nsuperconductivity experiment levitating magnet\nhttp://search.yahoo.com/search?ei=utf-8&fr=slv1-wdgt&p=superconductivity%20experiment%20levitating%20magnet\n\nBrowsing around, I found this kit:\nhttp://www.wondermagnet.com/superconductor.html\n\nNote that most of these experiments will require liquid nitrogen which requires care and special handling.  Not sure if you can obtain it very easily. You may want to talk to your science teacher about it.
747984
NO, All helium produced is done so through seperating it from air where it occurs naturally, but in very small concentrations. Air is seperated through cryogenic distallation. Unless you have some extraordinary equipment in your house, you will not be able to perform this kind of operation.
468137
RICE\nrest, ice, compression, elevation
280156
solid\nliquid\ngas\nplasma
442256
By cryogenic liquid, I'm assuming you mean something very cold, like liquid nitrogen, liquid oxygen, liquid helium, or liquid hydrogen.  And fissionable material is uranium or plutonium, so you're asking what happens when you make uranium cold?  \n\nRadiation is a nuclear process, not one that has to do with chemical reactions that are subject to fluctuations in temperature.  Whether the atoms are banging around with a lot of energy due to high temperature or very little due to low temperature, the nucleus's will continue to fission unperturbed.
338773
go to www.howstuffworks.com\n\nthey have everything
362248
Listen to IBL.  Metaraison's first and last sentences were right, but the transition from gas to solid is called deposition, not freezing.\n\nNames for phase transisitions:\ngas to liquid: condensation\nliquid to gas: boiling\ngas to solid: deposition\nsolid to gas: sublimation\nliquid to solid: freezing\nsolid to liquid: melting
670981
iron ore (magnetite or lodestone), cobalt, and nickel, as well the rare earth metals gadolinium and dysprosium (when at a very low temperature). \n\nThat'll about do it... \n\n\nest is mein vergnugen.
298511
No.  Everything includes all the things that exist.  The future has not happened yet and therefore doesn't exist so you cannot possibly know it.