Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 250
accuracy, being but a fraction of a millimetre. Michelsonsmodification was designed to increase this displacement. Itsmost important feature was the placing of the lens between NATURE AND PROPAGATION OF LIGHT. 239 the two mirrors, m and m. Moreover, the fixed mirror,which was plane, was placed at a… … Fig. 103. 103. At S is a narrow slit, m is the revolving mirror, Lthe lens, and m the fixed mirror. Light from a sourcebehind S passes through a slit, falls on w, is reflected tom whenever m is in a suitable position, and forms animage at 8. Light reflected from m through the lens Lcomes to a focus…
Physics
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![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)
