Applications of Lasers to Information Handling, The Perkin-Elmer Corporation, Norwalk, Connecticut 06852, 1966, 32 pp., free. Reprint of five talks given by company personnel. Laser Interferometer, Airborne Instruments Laboratory, Division of Cutler-Hammer, Inc., Deer Park, Long Island, New York 11729, 1965, 20 pp., free. Collection of article reprints. Laser: The New Light, Bell Telephone Laboratories, Murray Hill, New Jersey 07971, 19 pp., free. Full color, nontechnical brochure presents some background, principles, and applications of the laser.
Argon laser, which emits high-power blue-green beam continuously, has application in signal processing, communications, and spectroscopy. This unit is being beamed through prisms that separate its several discrete wavelengths of light, displayed on card at left foreground.
FOOTNOTES
[1]Sometimes referred to as hertz (abbreviated Hz), for the 19th Century German physicist Heinrich Hertz; 1000 Hz = 1000 cps.
[2]Devised in France and officially adopted there in 1799, the metric system uses the meter as the basic unit of length and has been proposed for all measurements in this country.
[3]Named for the Swedish physicist Anders J. Angstrom.
[4]The wavelength, indicated by the Greek letter λ (lambda) is related to frequency (f) in the proportion λ (in meters) = 300,000,000/f. (The number 300,000,000 is the velocity of light in meters per second.)
[5]Microwaves are radio waves with frequencies above 1000 megacycles per second.
[6]Ten to 30,000,000 kilocycles per second; this is low in the electromagnetic spectrum, but not low in terms of the radio spectrum, which has a low-frequency classification of its own.