Isothermal process | Wikipedia audio article
Channel: wikipedia tts
Date: 25/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Isothermal_process


00:00:07 1 Examples
00:00:43 2 Details for an ideal gas
00:01:04 3 Calculation of work
00:01:07 4 Entropy changes
00:03:18 5 Etymology
00:03:38 6 See also
00:03:48 7 References
00:04:54 Calculation of work
00:07:53 0. Since the First Law of Thermodynamics states that ΔU
00:08:03 −W for the isothermal compression or expansion of ideal gases.
00:08:10 Entropy changes
00:12:20 −Q/T; the minus sign is used since the heat transferred to the surroundings is equal in magnitude and opposite in sign to the heat, Q, transferred to the system. In the reversible case, the change in entropy of the surroundings is equal and opposite to the change in the system, so the change in entropy of the universe is zero. In the free expansion, Q
00:13:01 Etymology
00:13:20 See also



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SUMMARY
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An isothermal process is a change of a system, in which the temperature remains constant: ΔT = 0. This typically occurs when a system is in contact with an outside thermal reservoir (heat bath), and the change in the system will occur slowly enough to allow the system to continue to adjust to the temperature of the reservoir through heat exchange. In contrast, an adiabatic process is where a system exchanges no heat with its surroundings (Q = 0). In other words, in an isothermal process, the value ΔT = 0 and therefore the change in internal energy ΔU = 0 (only for an ideal gas) but Q ≠ 0, while in an adiabatic process, ΔT ≠ 0 but Q = 0.