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Scientific American, Vol. 74, No. 18 (1896) (1896)
leaf 7
ough it, and its given out, and when this was compared with a tuning intensity increases unti] the planes of the prisms are fork in the other hand of the observer, it indicated at parallel, when it again diminishes, and if one of the once whether the speed of the motor should be in- prisms is… … 4 is 108°-0969, \ery School. © 1896 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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