OF RADIANT HEAT THROUGH DIFFERENT BODIES.
29
Table II.—continued. | ||
Deviations of the galvanometer, |
Rays transmitted. | |
° | ||
Nitric acid (pure and colourless) | 5·36 | 15 |
Alcohol (absolute and colourless) | 5·30 | 15 |
Hydrate of potassium (colourless) | 4·63 | 13 |
Acetic acid (rectified, colourless) | 4·25 | 12 |
Pyroligneous acid (of a slightly brownish colour) | 4·28 | 12 |
Sugared water [eau sucrée] (colourless) | 4·20 | 12 |
Alum water (colourless) | 4·16 | 12 |
Salt water (colourless)[1] | 4·15 | 12 |
White of eggs (slightly yellowish) | 4·00 | 11 |
Distilled water | 3·80 | 11 |
Table III.—Crystallized bodies. Common thickness 2ᵐᵐ·62. | ||
Deviations of the galvanometer, |
Rays transmitted. | |
° | ||
Mirror-glass | 21·60 | 62 |
Rock salt (diaphanous) | 28·46 | 92 |
Iceland spar (diaphanous) | 21·80 | 62 |
Another species (diaphanous) | 21·30 | 61 |
Rock crystal, colourless (diaphanous) | 21·64 | 62 |
Rock crystal, smoky (diaphanous and very decidedly brown) | 20·25 | 57 |
Brazil topaz, colourless (diaphanous) | 19·18 | 54 |
Carbonate of lead (diaphanous) | 18·35 | 52 |
White agate (translucid) | 12·48 | 35 |
Sulphate of barytes (veined, dully diaphanous) | 11·72 | 33 |
Emerald (diaphanous, of a light blue) | 10·16 | 29 |
Yellow agate (translucid, yellow) | 10·10 | 29 |
Borate of soda (translucid) | 9·87 | 28 |
Green tourmaline (diaphanous, green) | 9·54 | 27 |
Adularia (diaphanous, dull, veined) | 8·30 | 24 |
Sulphate of lime (diaphanous) | 7·15 | 20 |
Fluate of lime (diaphanous, dull, veined) | 5·40 | 15 |
Citric acid (diaphanous) | 5·15 | 15 |
Sardoine (translucid) | 4·98 | 14 |
Carbonate of ammonia (diaphanous, dull, striated) | 4·50 | 13 |
Tartrate of potash and soda (diaphanous) | 4·40 | 12 |
Alum, crystal (diaphanous) | 4·36 | 12 |
Sulphate of copper (strongly diaphanous, blue) | 0·00 | 0 |
- ↑ In this solution we used very diaphanous pieces of rock salt; the same may be said of the solution immediately preceding—the water was completely saturated with the alum.