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LAMBERT, Johann Heinrich (1728-1777). Photometria sive de mensura et gradibus luminis, colorum et umbrae. Augsburg: Christoph Peter Detleffsen for the widow of Eberhard Klett, 1760.
8o (200 x 128 mm). 8 folding engraved plates. (A few leaves stained, one small internal tear on N4 just catching a few letters, some very minor marginal staining.) Original buff wrappers, uncut (a few tears and minor defects to spine).
FIRST EDITION OF THE FOUNDATION FOR THE EXACT MEASUREMENT OF LIGHT. "Both Kepler and Huygens had investigated the intesity of light, and the first photometer had been constructed by Pierre Bouguer (1698-1758); but the foundation of the science of photometry--the exact scientific measurement of light--was laid by Lambert's 'Photometry' ... In the Photometria he described his photometer and propounded the law of the absorption of light named after him. he investigated the principles and properties of light, of light passing through transparent media, light reflected from opaque surfaces, physiological optics, the scattering of light passing through transparent media, the comparative luminosity of the heavenly bodies and the relative intensities of coloured lights and shadows. His discoveries are of fundamental importance in astronomy, photography and visual research generally" (PMM). IN ENTIRELY ORIGINAL CONTITION. Grolier/Horblit 62; PMM 205; Norman 1269.
8o (200 x 128 mm). 8 folding engraved plates. (A few leaves stained, one small internal tear on N4 just catching a few letters, some very minor marginal staining.) Original buff wrappers, uncut (a few tears and minor defects to spine).
FIRST EDITION OF THE FOUNDATION FOR THE EXACT MEASUREMENT OF LIGHT. "Both Kepler and Huygens had investigated the intesity of light, and the first photometer had been constructed by Pierre Bouguer (1698-1758); but the foundation of the science of photometry--the exact scientific measurement of light--was laid by Lambert's 'Photometry' ... In the Photometria he described his photometer and propounded the law of the absorption of light named after him. he investigated the principles and properties of light, of light passing through transparent media, light reflected from opaque surfaces, physiological optics, the scattering of light passing through transparent media, the comparative luminosity of the heavenly bodies and the relative intensities of coloured lights and shadows. His discoveries are of fundamental importance in astronomy, photography and visual research generally" (PMM). IN ENTIRELY ORIGINAL CONTITION. Grolier/Horblit 62; PMM 205; Norman 1269.