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Thermodynamics

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4C 31.30 - Drinking Birds
Demonstrates: Vapor pressure changes due to temperature changes.
Description: Birds "drink" as temperature changes cause liquid to fill the evacuated space.
4C 32.10 - Relative Humidity
Demonstrates: Affect of humidity on temperature.
Description: Two versions are available. Dew point method creates condensation on the outside of a steel beaker. The wet bulb method measures the temperature of humidified air.
4C 33.50 - Franklin's Palm Glass
Demonstrates: Change of state.
Description: When one bulb is held in your hand body heat causes the volatile liquid inside to boil.
4C 50.10 - Thermal Models
Demonstrates: Pressure, temperature and volume.
Description: A three dimension graph for H2O and CO2.