Archiu:Joule's Apparatus (Harper's Scan).png
Tamany d'esta vista prèvia: 728 × 600 píxels. Atres/s resolucions: 291 × 240 píxels | 583 × 480 píxels | 933 × 768 píxels | 1243 × 1024 píxels | 1684 × 1387 píxels.
Resolució completa. ((1684 × 1387 pixels, tamany de l'archiu: 382 kB, MIME tipo: image/png))
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Summary
| Description |
English: Engraving of James Joule's apparatus for measuring the mechanical equivalent of heat, in which altitude potential energy from the weight on the right is converted into heat at the left, through stirring of water.
Français : Gravure représentant l’installation expérimentale utilisée par James Joule pour mesurer l’équivalence entre chaleur et travail. L’énergie potentilelle d’altitude du poids, à droite, est convertie en chaleur par agitation de l’eau à gauche. |
| Date | |
| Source | Harper's New Monthly Magazine, Vol. 39, No. 231, p. 327, August 1869. |
| Author | Jacob Abbott |
Licensing
|
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1931.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
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| Data/Hora | Miniatura | Dimensions | Usuari | Descripció | |
|---|---|---|---|---|---|
| actual | 11:18 18 oct 2009 | | 1684 × 1387 (382 kB) | wikimediacommons>Ariadacapo | Cleaned up background and improved contrast. |
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