 | 1865 - 1144 pages
...carbon, and arrived at the extraordinary result that a quantity of dissolved iodine sufficiently opake to cut off the light of the midday sun was, within...mirror, silvered in front, the rays emitted by the carbon-points of the electric lamp, we obtain a convergent cone of light. Interposing in the path of... | |
 | 1865 - 400 pages
...After several trials the author found that a solution of iodine in bisulphid of carbon, so opake as to cut off the light of the midday sun, was, within...absolutely transparent to invisible radiant heat. When the rays from the electric lamp were concentrated into a cone by means of a small glass mirror... | |
 | 1865 - 846 pages
...After several trials the author found that a solution of iodine in bisulphid of carbon, so opake as to cut off the light of the midday sun, was, within...absolutely transparent to invisible radiant heat. When the rays from the electric lamp were concentrated into a cone by means of a small glass mirror... | |
 | John Tyndall - 1865 - 112 pages
...atoms of the element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the midday sun, was almost absolutely transparent to all invisible calorific rays. By prismatic analysis Sir William Herschel... | |
 | Royal Institution of Great Britain - 1866 - 730 pages
...heat with freedom. Finally, he tried a solution of iodine in bisulphide of carbon, and arrived at the extraordinary result, that a quantity of dissolved...sufficiently opaque to cut off the light of * The glass in thin layers had a greeuish hue : I have since found black glass ,,ir more diathermic. —... | |
 | Smithsonian Institution. Board of Regents - 1869 - 488 pages
...atoms of ttio element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the mid-day sun, was almost absolutely transparent to all invisible calorific rays. By prismatic analysis Sir William Hcrschel... | |
 | United States. Congress. House - 1869 - 516 pages
...atoms of the element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the mid-day sun, was almost absolutely transparent to all invisible calorific rays. brought, by a converging lens, the ultra-red... | |
 | 1869 - 486 pages
...of t'tio element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the mid-day Bun, was almost absolutely transparent to all invisible calorific rays. By prismatic analysis Sir William... | |
 | John Tyndall - 1871 - 436 pages
...atoms of the element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the midday sun, was almost absolutely transparent to the invisible calorific rays. By prismatic analysis Sir William Herschel... | |
 | John Tyndall - 1871 - 438 pages
...atoms of the element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the midday sun, was almost absolutely transparent to the invisible calorific rays. By prismatic analysis Sir William Herschel... | |
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... element can act upon the radiant heat. When permitted to do so, it was found that a layer of dissolved iodine, sufficiently opaque to cut off the light of the midday sun, was almost absolutely transparent to all invisible calorific rays. 
