Paris, Claude Jombert, 1729.
Essai d'Optique sur la gradation de la lumiere.
First edition of this important work on the measurement on light by “the father of photometry” (DSB) and the author’s first work on the subject. “Bouguer’s achievement was to see that the eye could be used, not as a meter but as a null indicator, i.e., to establish the equality..... More