The Laws of Radiation And Absorption Memoirs By Prvost Stewart Kirchhoff a
The Laws of Radiation And Absorption Memoirs By Prvost Stewart Kirchhoff a
D B De Witt Bristol Brace
The book The Laws of Radiation And Absorption Memoirs By Prvost Stewart Kirchhoff a was written by author D B De Witt Bristol Brace Here you can read free online of The Laws of Radiation And Absorption Memoirs By Prvost Stewart Kirchhoff a book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Laws of Radiation And Absorption Memoirs By Prvost Stewart Kirchhoff a a good or bad book?
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90 RADIATION AND ABSORPTION. Without examining from which part of the black wall these rays have proceeded, their intensity may be found by the law established in 11. By the application of this, the intensity of those rays which were absorbed by the body C is shown to be . 00 (/ACT (1 r)A. Finally in order to find the intensity of the rays which proceed from the black covering by means of the body C to the concave mirror, and pass back from this to the body C and are here absorbed, let N design...ate the quantity which the quantity in- dicated by M in 12 becomes in consequence of plate P being brought into its place and the surface 3 removed ; the intensity is then = f MNr* A. J o The difference between M and N arises only from . The varia- tion which the rays, falling upon the body C from the black covering through opening 1, undergo by the introduction of plate P and the removal of surface 3. Suppose the plate P brought into its position, without removing surface 3, then M can undergo no change, since all the pencils of rays, which go to the opening 1 remain unchanged ; the pencil proceeding from surface 2, for example, suffers a loss through reflection at plate P which will be exactly replaced by the reflection of the rays going out from the surface 3.
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