Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 326
nd DE are seento be equally illuminated. This beingdone, the distance of the candles fromthe wall is measured, and AB will be toKC as ^/2 is to 1, or by inverting, thesquare of the distance KC as 2 to 1. It is very remarkable (at least so Iunderstand him) that having made thisexperiment, or even… … Illustrating Lamberts experiments with candles (from the Photometria), demonstrating the Inverse Square Law. to think, in spite of the title of his greatwork, that he did not, and that Bouguerwas the first man to measure light, Inthe index to Photometria there are tworeferences to instrumenta…
Lighting
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