Martin, L. C. (Louis Claude), Gamble, William · London, Blackie · leaf 41
COLOUR ANALYSIS AND SYNTHESIS 17 spectrum, and for experimental purposes it is naturally desirable first to form a spectrum and then to select from it various regions, the light of which we may desire to use. For lecture demonstration this is best done by means of an apparatus similar to that… … Fig. 10. — Colour Mixture Apparatus Plan The essential feature of the apparatus is really the direct- vision spectroscope system formed of the slit S, the collimator lens C, the prism (compound) P, and the lens N, which forms a spectrum in the plane of the aperture G. I is a circular iris diaphragm…
Color photography · Color printing · Color
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-78-23.webp)
