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MOTIVE POWER OF HEAT.
183
| Names of the Media. | Temperatures. | Values of μ. | Values of μ deduced from Regnault's Observations. | Differences. |
|---|---|---|---|---|
| Air | ° 0.5 |
(Carnot) 4.377 |
4.960 | .383 |
| Sulphuric Ether | (Boil, pt.) 35.5 | (Clapeyron) 4.478 |
4.510 | .032 |
| Alcohol | 78.8 | 3.963 | 4.030 | .071 |
| Water | 100 | 3.658 | 3.837 | .179 |
| Essence of Turpentine. | 156.8 | 3.530 | 3.449 | −.081 |
above (Table I.) for the same temperatures, as derived from Regnault's observations on the vapor of water.
44. It may be observed that the discrepancies between the results founded on the experimental data supplied by the different observers with reference to water at the boiling-point, are greater than those which are presented between the results deduced from any of the other liquids, and water at the other temperatures; and we may therefore feel perfectly confident that the verification is complete to the extent of accuracy of the observations.[1] The considerable discrepancy presented
- ↑ A still closer agreement must be expected when more accurate experimental data are afforded with reference to the other media. Mons. Regnault informs me that he is
