Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 564
apoint b, which is the principal focus of a second lens c. . Consequently thepencil, on leaving the telescope B, is formed of parallel rays (552). This pencilenters the prism P. On leaving the prism the light is decomposed, and in N N 546 On Light. [576- this state falls on the lens x. By this lens… … Vlg. 531- The telescope C serves to measure the relative distances of the linesof the spectrum. For this purpose a micrometer is placed at ;«, divided
Physics
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