Word: infra
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Fogg Museum's Technical Research Department has arranged an exhibition of over a hundred photographs taken by infra-red, ultra-violet and X-ray photography of some important European and American paintings, it was announced today...
...human eye were tuned to longer wave lengths of radiation, it would be able to see radio waves. The ethereal wiggles that gird the globe with speech and music are part of the same electromagnetic spectrum which includes visible light, ultraviolet and infra-red radiation, x-rays, gamma rays from radium. Hence under ideal conditions radio waves travel at the velocity of light - about 186,270 mi. per sec. - and for many a year radiomen assumed that wireless signals always traveled at that pace in their journeys around Earth. Last week Dr. Harlan True Stet son of Harvard informed...
...scientists plan to obtain spectrograms of the outer layers of the sun's atmosphere and of the brilliant corona over a wide range of wave lengths. They will study especially the infra-red region of the spectrum, where present knowledge is only fragmentary...
...many occasions before this Captain Stevens has taken pictures of the curvature of the earth with the aid of infra red rays. In the hall of the Geographical Institute among a collection of his aerial pictures there is one example of the curvature. Pictures taken on this flight from such a great height should produce much better studies of this phenomenon...
Thermocouples are activated by infra-red radiation as well as by starlight. It would be possible to put the thermocouple at the focus of a movable parabolic reflector, and to assume, when a peak of electrical activity was noted, that the reflector was trained on some strong source of radiation-such as a metal ship out to sea in the dark. If this is how the Signal Corps' ship-finder works, it differs in no essential detail from the infra-red "Fog-eye" developed by Paul Humphrey Macneil and successfully demonstrated two years ago (TIME...