Place a beaker of water in the bell jar attached to a vacuum pump. Turn on the pump and the water will begin to boil. Discuss the necessity of boiling food longer to cook it at higher elevations. Talk about bubble chambers and cosmic rays influencing when bubbles first appear in the liquid.
Note: Some of this effect is simply from the air dissolved in the water coming out due to the action of the pump.
Three-dimensional PVT phase diagram models. Read More
Illustrate aspects of phase transitions. Read More
Illustrate aspects of phase transitions. Read More
Demonstrate that water boils at a lower temperature under reduced pressure. Read More
Demonstrate water boiling under reduced pressure. Read More
Show the increase in volume which accompanies the transition from liquid to gaseous nitrogen. Read More
Show the increase in volume which accompanies the transition from liquid to gaseous nitrogen. Read More
Illustrates forces produced by the pressure drop when steam condenses into water
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Illustrates forces produced by the pressure drop when steam condenses into water
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Demonstrate dramatically that the volume of vapor is greater than the volume of the same amount of liquid. Read More
Illustrate change of phase between liquid and vapor in an confined fluid. Read More
Surprising demonstration using condensation of steam. Read More
Demonstrates forces created by freezing water
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Freeze water by reducing the ambient pressure. Read More
Illustrate freezing caused by cooling by evaporation. Read More
Demonstrate the heat of fusion. Read More
Demonstrate that the freezing point of water can be reduced by putting ice in a salt water bath. Read More
Demonstrate regelation. Read More
Demonstrate sublimation of carbon dioxide (dry ice) from a solid into a gas. Read More
Demonstrate condensation sublimation. Read More
Show the behavior of a binary fluid as it passes through the critical temperature. Read More