Publisher's Synopsis
Excerpt from Lambert's Photometrie, Vol. 3: Photometria, Sive De Mensura Et Gradibus Luminus, Colorum Et Umbrae, 1760; Theil Vi und VII; Anmerkungen
A P a: F E a FM 3; EM y a, so wird das Element pqgp dy sin: vdx Die scheinbare Grösse desselben verhält sich aber wie cos EP (eos a cosy sin a siny) ein a.
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