Photoelectricity and the chemical indust
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Walters, J. A.
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Article
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1935
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Wiley (John Wiley & Sons)
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When light is iillowctl to fii11 froiii II Iniiip on to n ~~liotoccll R giilviinoiiictcr in $1 suitiibly iirriiiigeil circuit with tlic cell will tlcflcct, iiiitl by iiicrciisiiig or dccrciisiiig t.lic iiiiioiiiit of liplit we ciiii iiicrcvise or tlecrcnsc t lie dcflcctioii.