On the Mechanical Equivalent of Heat: With Subsidiary Researches on the Variation of the Mercurial From the Air Thermometer, and on the Variation of the Specific Heat of Water (Classic Reprint) - Rilegato

Rowland, Henry Augustus

Rilegato

ISBN 10: 0484108654 ISBN 13: 9780484108652

Casa editrice: Forgotten Books, 2018

Riassunto

Excerpt from On the Mechanical Equivalent of Heat: With Subsidiary Researches on the Variation of the Mercurial From the Air Thermometer, and on the Variation of the Specific Heat of Water

But Joule experimented on water of one temperature only, and did not reduce his results' to the air thermometer; so that we are still left in doubt, even to the extent of one per cent, as to the value of the equivalent on the air thermometer.

The reduction of the mercurial to the air thermometer, and thence to the absolute scale, has generally been neglected between 0° and 100° by most physicists, though it is known that they differ several tenths of a degree at the 45° point. In calorimetric researches this may produce an error of over one, and even approaching two per cent, especially when a Geissler thermometer is used, which is the worst in this respect of any that I have experimented on; and small intervals on the mercurial thermometers differ among themselves more than one per cent from the difference of the glass used in them.

Again, as water is necessarily the liquid used in calorimeters, its variation of Specific heat with the temperature is a very important factor in the determination of the equivalent. Strange as it may appear, we may be said to know almost nothing about the variation of the specific heat of water with the temperature between 0° and 100° C.

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Dettagli dell?edizione

• Editore: Forgotten Books
• Data di pubblicazione: 2018
• Lingua: Inglese
• ISBN 10: 0484108654
• ISBN 13: 9780484108652
• Rilegatura: Copertina rigida
• Numero di pagine: 132
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