File:Illustrations in the book Heat considered as a mode of motion (fig 4 and 5) by John Tyndall.jpg
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Summary
| Description |
English: The illustration is taken from John Tyndall's introductory book on the physics of heat, Heat Considered as a Mode of Motion year 1869 edition. The apparatus on the right is a thermopile, which is a sensitive device for measuring temperature changes. In the upper part of the illustration, the box on the left is a locked container of compressed air that has been let stand for a while. When the valve on this box is opened, the compressed air rushes out of the box and moves towards the face of the thermopile. This causes the temperature at the face of the thermopile to decrease. In the lower half of the illustration, the object on the left is a bellows. The motion of the bellows takes in air, compresses it, and pushes the compressed air out through a nozzle towards the face of the thermopile. This causes the temperature at the face of the thermopile to increase. Discussed in the book on pages 42 to 47 and also page 28. |
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| Date | and 1869 | |||||||||||||||||||||||
| Source | The illustration appears in John Tyndall's book Heat Considered as a Mode of Motion, first published 1863. It has been copied from pages 27 and 28 of the book's 1869 edition online at Archive.org. | |||||||||||||||||||||||
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| Permission (Reusing this file) |
Public domain on account of its age | |||||||||||||||||||||||
_by_John_Tyndall.jpg){kind=link}
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 2011-08-27 22:19 | 618×810× (88148 bytes) | Seanwal111111 | {{Information |Description=The illustration is taken from [[John Tyndall]]'s introductory book on the physics of heat, ''[http://www.archive.org/details/heatconsideredas00tyndrich Heat Considered as a Mode of Motion]]'' year 1869 edition. The apparatus o |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:31, 2 April 2017 | | 618 × 810 (86 KB) | commons>Frankemann | Transferred from en.wikipedia |
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_by_John_Tyndall.jpg){kind=link}