Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 105
). 301—312, 1888. t Elstor and (Ic-ilcl, Ann. d. Ihy-nk, 38, ])]).40,497,1880. \ Klst<ir and TUutcl, Phi/s. Zeil.schr., M, |)p.;i57—202, 1910; 12, pj). 009—014, 1911. cation of form in the course of whichits surface becomes coloured and is foundto be three or four times as sensitive asthat of… … Fig 1.—Usiuil form of Elster and Gcilcl phulo-ckctric cell (Mr. J. W. T. Walsh). showed, somewliat diagramniatically, theform generally taken by a sodium or])otassiuni photo-electric cell. C is thecathode wire in contact with M the activemetal, while A is a wire anode. Tlicmetal has undergone the…
Lighting
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