what is a 'vitrified' tile?
373704
Basically, it's been heat-treated so that the glaze becomes glass-like to form a seal over the ceramic. Here is a FAQ site about tile:
666612
This is just the program you need. Its absolutley free and not large in size. \n\nhttp://www.download.com/Vitrite/3000-2347_4-9661147.html?tag=lst-0-1\n\nSite Admin - 3doms.com\nTechsupport@3doms.com
546552
It is called latent heat or the amount of heat required to change phases.  The latent heat of vaporization is usually much great than that of freezing.\n\nEach chemical or molecule has a different latent heat to change from liquid to gas.  It is also interesting that when water vapor condenses into liquid water, it gives off the exact same amount of energy that it took to boil it.\n\nNow think of dry ice (frozen carbon dioxide).  It goes straight from solid to gas (sublimation) and think about how much of a kick (freezing power) it has.
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
306997
do you mean icynene?\nif so it is a foam insulation sprayed into walls, ceilings, etc\nGood Luck
829221
Dry ice is frozen carbon dioxide (CO2).
23628
"Next, the glass begins a heat treatment process in which it travels through a tempering oven, either in a batch or continuous feed. The oven heats the glass to a temperature of more than 600 degrees Celsius. (The industry standard is 620 degrees Celsius.) The glass then undergoes a high-pressure cooling procedure called "quenching." During this process, which lasts just seconds, high-pressure air blasts the surface of the glass from an array of nozzles in varying positions. Quenching cools the outer surfaces of the glass much more quickly than the center. As the center of the glass cools, it tries to pull back from the outer surfaces. As a result, the center remains in tension, and the outer surfaces go into compression, which gives tempered glass its strength."\n\nYes, it increases in strength as it's approx 4x as strong as annealed glass.
28502
"A heat pack like the one you are describing contains sodium acetate and water. It turns out that sodium acetate is very good at supercooling. It "freezes" at 130 degrees F (54 degrees C), but it is happy to exist as a liquid at a much lower temperature and is extremely stable. Clicking the disk, however, has the ability to force a few molecules to flip to the solid state, and the rest of the liquid then rushes to solidify as well. The temperature of the solidifying liquid jumps up to 130 degrees F in the process.\n\nWhen you boil the solid, you melt it back to the liquid state. You have to completely melt every crystal, by the way, or the liquid will quickly re-solidify. You can repeat this cycle forever, theoretically, just as you can freeze and melt water as many times as you like. The plastic pouch eventually wears out and leaks, though (since sodium acetate is a food additive, it is non-toxic)."
239534
because the impurities have low melting points under the ice , u got a compound not a pure material
206720
I once tiled over an ugly countertop with ceramic tile.  It worked great.
748848
pumice is considered a glass too. The texture is formed by rapidly expanding gas in erupting lava.
334109
Lattis, or Lattice. I'm not sure of the spelling.
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Under normal curcumstances when water is cooled, it will form ice at its freezing point.  That is crystallisation takes place and an ice cube is formed.  If now the liquid is cooled past its freezing point without crystallisation taking place, a glassy substance is formed.\n\nWe can also cool saturated solution, without crystalllisation taking place to form a super saturated solution.  This is super cooling.
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Hyperhydricity, or vitrification, is a physiological malformation affecting tissue culture-generated plants. This malformation is associated with excessive hydration and poor lignification and results in poor regeneration of plants.
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This ain't my forte, but here goes.\n\nAdiabatic expansion is like what my freezer and air conditioner use to cool things off.  They take a pressurized gas and let it expand, which drops its temperature.  Then they let this low-temperature stuff suck up the heat in my Ben & Jerry's or in my house.  If you've ever discharged a CO2 fire extinguisher or used a can of compressed air to clean your computer, the CO2 is so cold it condenses the water in the atmosphere or the air on your computer is very cold.\n\nIsothermal means the temperature stays the same.  So if your gas expanded and it didn't get colder, something else went on to provide the heat to keep the temperature the same.  \n\nMaking heat is work, in physics terminology, so the isothermal expansion required more work than the adiabatic expansion.
468137
RICE\nrest, ice, compression, elevation
319594
I think this guy is talking about bentonite.  It's an expanding, ultra-low permeability clay that comes in pellets or chips (dry, of course).  We use it in the environmental business to seal between groundwater layers.