 | 1865 - 338 pages
...foregoing experiments. When the solution is interposed and the light is cut away, what becomes of the image ? It disappears from sight, but an invisible...calorific rays. Falling on white paper, the image clears itself out ; falling on black paper two holes are pierced in it, corresponding to the images... | |
 | John Tyndall - 1865 - 66 pages
...it immediately glows at the place where the focns falls. 8. Transmutation of Rays : * Calorescenee. Eminent experimenters were long occupied in demonstrating...pierced in it, corresponding to the images of the two coal points : but falling on a thin plate of carbon in vacuo, or upon a thin sheet of platinized platinum,... | |
 | John Tyndall - 1865 - 112 pages
...immediately glows at the place where the focus falls. 27 8. Transmutation of Rays1 : Calorcscence. Eminent experimenters were long occupied in demonstrating...pierced in it, corresponding to the images of the two coal points : but falling on a thin plate of carbon in vacuo, or upon a thin sheet of platinized 1... | |
 | 1865 - 640 pages
...what becomes of the image ? It disappears from eight, but an invisible thermograph remains, and it ¡8 only the peculiar constitution of our eyes that disqualifies...calorific rays. Falling on white paper, the image clears itself out ; falling on black paper two holes are pierced in it, corresponding to the images... | |
 | Albert Taylor Bledsoe, Sophia M'Ilvaine Bledsoe Herrick - 1870 - 560 pages
...inverted image of the carbon points of the electric light is formed at the focus of the mirror employed. 'When the solution is interposed, and the light is...peculiar constitution of our eyes, that disqualifies them for seeing the picture formed by the calorific rays. Falling on white paper, the image chars itself... | |
 | Smithsonian Institution. Board of Regents - 1869 - 488 pages
...vacuo, it immediately glows at the place whore the focus falls. « ' VIII. — TRANSMUTATION OF RAYS : CALORESCENCE.* Eminent experimenters were long occupied...calorific rays. Falling on white paper, the image chars itsrlf out; falling on black paper, two holes are pierced in it, corresponding to the images of the... | |
 | 1869 - 486 pages
...image of the object ; withdrawing, for example, our iodine solution, an intensely luminous in verted image of the carbon points of the electric light is...are pierced in it, corresponding to the images of tho two coal points ; but falling on, a thin plate of carbon in vacuo, or upon a thin slicet of platinized... | |
 | United States. Congress. House - 1869 - 516 pages
...from sight, but an invisible thermograph remains, and it is only the peculiar constitution of our eves that disqualifies us from seeing the picture formed...pierced in it, corresponding to the images of the two coal points ; but falling on a thin plate of carbon in vacuo, or upon a thin sheet of platinized plautinnm,... | |
 | John Tyndall - 1871 - 436 pages
...suspended in vacuo, it immediately glows at the place where the focus falls. 8. Transmutation of Hays: * Calorescence. Eminent experimenters were long occupied...paper, the image chars itself out: falling on black 1 1 borrow this term from Professor Challis, " Philosophical Magazine," vol. xii., p. 521. paper, two... | |
 | John Tyndall - 1871 - 438 pages
...suspended in vacuo, it immediately glows at the place where the focus falls. 8. Transmutation of Mays : 1 Calorescence. Eminent experimenters were long occupied...constitution of our eyes that disqualifies us from seeing he picture formed by the calorific rays. Falling on ?hite paper, the image chars itself out : falling... | |
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... and striking proof of this identity. A concave mirror produces beyond the object which it reflects an inverted and magnified image of the object ; withdrawing, for example, our iodine solution, an intensely luminous inverted image of the carbon points... 
