Abstract

A method is proposed and the theory briefly given for focusing to a line all electrons of the same energy reflected or emitted at any given angle from a plane surface.

It was found that the lines of focus lie on the surface of a cylinder that is tangent to the center of the reflecting surface and having a radius equal to the radius of the path of the electrons.

© 1928 Optical Society of America

Locus of Secondary Image for Two Plane Mirrors Variable Independently about Parallel Axes Situated in the Respective Planes*

L. E. Dodd
J. Opt. Soc. Am. 17(5) 369-378 (1928)

Plane waves of lightII. Reflection and refraction

Thornton C. Fry
J. Opt. Soc. Am. 16(1) 1-25 (1928)

The Vibrations of Tuning-Forks1

Elmer A. Harrington
J. Opt. Soc. Am. 17(3) 224-239 (1928)

Conjugate Surfaces of A Spherical Refracting Surface

James P. C. Southall
J. Opt. Soc. Am. 16(6) 380-397 (1928)

The Time Intervals between the Appearance of Spectral Lines in the Spectra of Alkali and Alkaline–Earth Metals

Gordon L. Locher
J. Opt. Soc. Am. 17(2) 91-101 (1928)