 | Perry Fairfax Nursey - 1842 - 632 Seiten
...it, and the surface be breathed over once, the object being then carefully removed, as often as you breathe again on the surface, a spectral image of...unequally. 2. On repeating this simple experiment, I And that it ia necessary for the production of a good effect, to use dissimilar metals; for instance,... | |
 | 1843 - 714 Seiten
...this singular phenomenon may be exhibited for many days after the first trial is made." Several other similar experiments are mentioned, all of them going...the metallic surface, which occasions it to condense vapors unequally. 2. On repeating this simple experiment, I ñnd that it is necessary for the production... | |
 | 1843 - 884 Seiten
...this singular phenomenon may be exhibited for many days after the first trial is made." Several other similar experiments are mentioned, all of them going...the metallic surface, which occasions it to condense vapors unequally 2. On repeating this simple experiment, I find that it is necessary, for the production... | |
 | Encyclopaedia - 1851 - 276 Seiten
...seen, and this phenomenon may be exhibited for many days after the first trial is made." Several other similar experiments are mentioned, all of them going...platina on a plate of copper or of silver will make a very decided image, whereas copper or silver on their respective plates gives but a very faint one,... | |
 | Robert Hunt - 1852 - 324 Seiten
...seen, and this phenomenon may be exhibited for many days after the first trial is made." Several other similar experiments are mentioned, all of them going...platina on a plate of copper or of silver will make a very decided image, whereas copper or silver on their respective plates gives but a very faint one,... | |
 | Robert Hunt - 1852 - 380 Seiten
...seen, and this phenomenon may be exhibited for many days after the first trial is made." Several other similar experiments are mentioned, all of them going...platina on a plate of copper or of silver will make a very decided image, whereas copper or silver on their respective plates gives but a very faint one,... | |
 | Robert Hunt - 1853 - 356 Seiten
...and"^ this phenomenon may be exhibited for many days after the first trial is made." Several other similar experiments are mentioned, all of them going...the production of a good effect to use dissimilar inetals ; for instance, a piece of gold or platina on a plate of copper or of silver will make a very... | |
 | Robert Hunt - 1854 - 458 Seiten
...the simple experiments above referred to, of placing a disc upon a metal plate and breathing on it, I find that it is necessary for the production of...platina, on a plate of copper or of silver, will make a very decided image, whereas copper or silver, on their respective plates, give but a very faint one,... | |
 | Robert Hunt - 1854 - 466 Seiten
...the simple experiments above referred to, of placing a disc upon a metal plate and breathing on it, 1 find that it is necessary for the production of a...platina, on a plate of copper or of silver, will make a very decided image, whereas copper or silver, on their respective plates, give but a very faint one,... | |
 | Joseph Hands - 1879 - 572 Seiten
...repeating some of the foregoing experiments of placing a disc upon a metal plate and breathing thereon, it is necessary, for the production of a good effect, to use dissimilar metals, thus setting up Meloni's galvanic action. For instance, a piece of gold or platinum placed on a plate... | |
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... 2. On repeating this simple experiment, I find that it is necessary for the production of a good effect to use dissimilar metals ; for instance, a piece of gold or platina on a plate of copper or of silver will make a very decided image, whereas copper... 
