Daniell, Alfred, 1853-1937 · London : Macmillan · leaf 526
es of the body, these moleculesare set in motion which is modified by intramolecular friction so as to reacton the transmitted light. The question is still obscure. The heat region of the spectrum is very much shortened or compressedby the use of glass prisms. Lenses.—Lenses are of two main kinds…
Physics
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