IN NATURE of April 28, p. 268, Dr. R. A. Houstoun directs attention to the use of the spectrometer for Young's double-slit experiment. In a letter on “The Visibility of Interference Fringes and the ...
THE writer has found the following simple arrangement well adapted for the study of the visibility of fringes arising from a double slit and a “source” slit of variable width. A double slit, ruled ...