Lectures on light, delivered in the United States in 1872-'73; with an appendix (1873)
Tyndall, John, 1820-1893 · New York, Appleton · leaf 79
of the filings to arrange themselvesin determinate lines. They cannot freely follow thistendency, for they are hampered by the friction against Fia. 6. … N is the nozzle of the lamp; M a plane mirror, roflectinff the beam upwards. AtP, the niapnets and iron filin(,sare placed; L is a lens which forms an imagoof the ma^nets and filin^cs; and R is a totaliy-rvflectiiig prism which casts theImage, G, upon thu screen. the paper. They are helped by…
Optics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
