 | Triple Point of water Took tap water and placed it on an evaporation disk in a vacuum chamber, and lowered the pressure until it spontaneously froze! The process took about 6 minutes to get the pressure down, but the freezing happened in less than a second. The triple point of water is when water is boiling and freezing at the same time |
 | Carbon Dioxide Solid and Liquid Watch solid carbon dioxide turn to liquid at over 5 atomosphers of pressure; and then when the pressure is released, the liquid turns back into solid |
 | Supercritical Phase Transition Supercritical phase transition under normal gravity conditions. The transition takes 2 minutes. |
 | Water Triple Point Cell A super cooled WTP cell is shaken |
 | Boiling Water to Make Ice - Triple Point of Water This is an experiment to obtain a reaction in water molecules called "the triple point". In this case, in the same vessel of water, it will exist in all three states: Vapor, Liquid, and a Solid. After some conversation on the subject on a popular HVAC website, this was yet another experiment I just had to do! What I have done here is add some tap water to a baby food glass jar. I rigged a schrader valve to the lid. The first part of the test I attached two recovery tanks that were already in a deep vacuum. These tanks are the size of your typical Propane Tank for a BBQ grill. A hose is connected from them to the small glass jar. I do this to obtain a quick change from atmospheric pressure in the glass jar to a deep vacuum in a matter of a second. As observed, the water begins to boil instantly but not a big change in temperature. The seal may not have been 100% and it did not maintain 30" of vacuum. (That could be partially due to the water changing into vapor as well without continued pumping). So I then attached a 7CFM vacuum pump directly to the small glass jar. It took a while but the temperature of the water in the jar began to drop from the ambient 78 degrees F in the room to below freezing. At 27 degrees the water still did not change to a solid (ice). That would not happen at atmospheric pressure unless salt or soemthing else was added. Once the water fell to approx 22 degrees it started to change to a solid. After some more pumping I had no liquid water and about 1/4" of ice in the bottom of the glass jar. My basic laymens explaination: Water nomally boils at 212 degrees F at sea level atmospheric pressure. Raise the pressure and it boils at a higher temperature (like in a pressure cooker). But lower the pressure and it will boil at lower temperatures. Lower the pressure enough and you can EASILY boil water at room temperature ~80 degrees F. If the water is in a somewhat insulated environment where it does not easily absorb heat from the surrounding area, like in this glass jar, it will absorb heat form the remaining water. As it continues to remove heat from the remaining water, the remaining water can cool below the freezing point and turn into ice. At that point, you have water in all three forms: Solid, Liquid, Vapor. To read more on this please read this short article: http://www.avs.org/pdf/triple%20point.pdf Or do a search on "triple point of water". |
 | Supercritical phase transition Phase transition from supercritical state into liquid+gas. Preliminar footage for an experiment to take part in a parabolic flight (http://skysickers.wordpress.com ) |
 | Critical point of water with Sunn O))) Critical point of water with the Declic High Temperature Insert. music: Sunn O))) - Orthodox Caveman. more information: http://www.science.uva.nl/research/mgrd/video-cp.html and http://en.wikipedia.org/wiki/Critical_point_%28thermodynamics%29 |
 | Zero gravity silly but cool experiments Experimentation with water in the International Space Station. Experimentación con agua en la Estacion Espacial Internacional. mike.rincondelhuevo.com |
 | supercritical CO2 heating up CO2 above 31 °C transforms the liquid CO2 to a supercritical fluid |
 | magnesium in dry ice magnesium powder is lit inside a block of solid carbon dioxide, proving you don't need gaseous oxygen in all fires. Taken from Newcastle University's Holmes' lectures 2007 |
| Oceanfrontier Hideaway | |
| Sheraton Suites Philadelphia Airport | |
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| Coral Beach Club |
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