Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 277
ence of phase, the intensity i of the spectrum can befound from the equation / = I cos ir^, where I is the intensityof the incident light. If now either the analyser or the polariserbe turned through 90°, so that they became crossed instead ofparallel, as they were in Moutons case, then the… … 26o SPECTROSCOPY first of these he measures by the thermopile both i and i\ onewith the Nicols parallel, and the other with them crossed, and i - i from these values finds the value of ^-r-» which it can be seen is equal to cos 2ir^. Now, when <:^ = k -\-\, where k is the whole number of waves,…
Spectrum analysis
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