Word: infra
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...Infra...
Will TIME please explain, for the benefit of the unschooled, how infra-red rays, which are invisible, can aid fog beacons, airfield lights? (TIME, Sept...
...green, carbon dioxide for white. The gases are confined in the tubes at low pressures (5 to 10 millimetres, compared to 760 millimetres in the sea-level atmosphere). The gases are made to glow by an alternating electric current flowing through them. Because of the penetrating quality of the infra-red rays given off, neon lamps are used as fog beacons, airfield lights...
...Yusen Kaisha. Beaming with satisfaction her passengers debarked from the first trans-Pacific "Cabin Class" ($250), from the first trans-Pacific "Tourist Third" ($125). Hitherto it has cost some $300 to cross the Pacific in First and to cross in plain Second or plain Third has been even more infra dig; than on the Atlantic...
...Heat rays-infra red rays...