File:Piston gv52.png

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DescriptionPiston gv52.png	English: Pressure, Energy, Volume, and Temperature are state variables. Work and heat are not
Date	6 December 2013, 22:03:05
Source	Own work
Author	Guy vandegrift

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:59, 5 April 2015		646 × 211 (7 KB)	Guy vandegrift	Misleading claim that dQ is always TdS is removed. I carefully watch and monitor all the pages that use this image so there will be on unpleasant surprises by users on Wikipedia and Wikiversity.
	03:04, 7 December 2013		715 × 211 (11 KB)	Guy vandegrift	User created page with UploadWizard

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