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In cylinder 3, the atom collides elastically with the bottom of the piston, but the piston is moving up. This both reverses the direction of the atom's velocity and decreases the speed of atom, so the temperature decreases.

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This animation shows one specific thermodynamic cycle for a monatomic ideal gas. This particular cycle consists of (1) adding heat at constant pressure, to double the temperature; (2) removing heat at constant volume, returning to the original temperature; followed by (3) an isothermal compression that returns the system to the initial state.

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In this simulation, you can look at the difference between a constant temperature (isothermal) process and an adiabatic process. The paths look somewhat similar on the P-V diagram, but you should notice clear differences. Note that an isothermal process has no change in temperature, so the change in internal energy is zero, but in an adiabatic process the heat transferred is zero.

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In this simulation, you can investigate constant pressure (isobaric), constant volume (isochoric), and constant temperature (isothermal) processes. You can add or remove 400 J of heat with any of these processes, and see what happens to the gas itself, the resulting path on the P-V diagram, and also the impact on the various parameters.

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This simulation introduces the P-V (pressure-volume) diagram. See what happens when the temperature of the ideal gas or the volume is changed (at constant temperature). You can also sketch a pressure vs. volume graph for a given temperature, by choosing a temperature and then using the volume slider to cover the full range of volumes.

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Thermodynamics and the End of the Universe:  Energy, Entropy, and the fundamental laws of physics.

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1) I sistemi termodinamici (e PRIMO PRINCIPIO)

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1) I sistemi termodinamici (e PRIMO PRINCIPIO)

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Sistema termodinamico ed energia interna Primo principio della termodinamica

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Uploaded by Treccani Scuola on 2016-11-25.

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Principio zero della termodinamica (Gianlorenzo Bussetti)

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Video related to Polimi Open Knowledge (POK) http://www.pok.polimi.it

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Il lavoro termodinamico Primo principio della termodinamica

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Uploaded by Treccani Scuola on 2016-11-25.

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3) Primo principio della termodinamica:ΔU=Q-L

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3) Primo principio della termodinamica:ΔU=Q-L

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Trasformazioni isobare, isocore e isoterme Primo principio della termodinamica

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Uploaded by Treccani Scuola on 2016-11-25.

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4) Le trasformazioni termodinamiche (iso-....p,V,T ; adiab)

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4) Le trasformazioni termodinamiche (iso-....p,V,T ; adiab)

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Le trasformazioni dei gas - Gas e teoria cinetica

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Uploaded by Treccani Scuola on 2016-11-12.

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Trasformazioni cicliche e adiabatiche Primo principio della termodinamica

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Uploaded by Treccani Scuola on 2016-11-25.