Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 314
size of these isimmaterial), the various measurementsrequired in practice can be made. Thedistance of the cell naturally variesaccording to the power of the light-source.For example, a small hand lamp at adistance of 30 cms. will give a deflectionof about 40 divisions. If the moretransparent… … H(X) Fig. 5.—Showing arrangement of cell. E Battery. Z Cell. F Filter. G Galvanometer. N Source of light. K Reflector. The cell, Z, is connected in series with thegalvanometer, G, and with a source ofP.D., E. The effect of the lamp isconveniently accentuated by the whitediffusing reflector, R. A…
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
