Farther Inquiries Into the Changes Induced on Atmospheric Air: By the Germination of Seeds, the Vegetation of Plants, and the Respiration of Animals (1811)
Farther Inquiries Into the Changes Induced on Atmospheric Air: By the Germination of Seeds, the Vegetation of Plants, and the Respiration of Animals (1811)
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1811 edition. Excerpt: ...the separation of this element from them. Thus, if a com-pound combustible be exposed to the concentrated action of the solar rays, its several elements are first separated, and almost, at the same instant, recombine into a new form, according to the nature of the body employed, and the greater or less ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1811 edition. Excerpt: ...the separation of this element from them. Thus, if a com-pound combustible be exposed to the concentrated action of the solar rays, its several elements are first separated, and almost, at the same instant, recombine into a new form, according to the nature of the body employed, and the greater or less intensity with which the caloric is made to act; and hence the various gaseous, fluid, and solid products, which th.fr combustion of the same body, or of different bodies, affords. The calorific rays of light, therefore, like positive electricity, are able to effect in bodies the chemical actions of decomposition and combination, and these in an order depending on the state in which the bodies are presented to their action. 455. But besides these operations, which the ca lorific rays effect, we have seen, that the decomposition of metallic oxides (431.), of different acids (439.), and especially of carbonic acid, is produced in that part of the prismatic spectrum which is farthest removed from the heating power of light, and, consequently, by the chemical rays, which possess no heating power. In all these cases, however, we observe decomposition only to take place, and no subsequent combination to follow, in the manner in which that operation is accomplished by the calorific rays 5 for the oxygen is only released from its combination with the metal, with carbon, or with any other substance with which it was previously combined, but no new product is, at the same time, formed, neither are the usual phenomena of combustion exhibited. Hence, therefore, we may remark a striking difference between the action of the chemical and calorific rays of light; for though both species agree in the property of effecting decomposition, the calorific...
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