Word: beaming
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Dates: during 1930-1939
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...Marconi microwaves approach heat waves in shortness and light waves in behavior. They can be focused as a beam and sent in any direction. Theoretically they should be perceptible only just beyond the visible horizon of the sending station. Senator Marconi has made them register over a distance of 180 mi., or nine times his sending station's visible horizon, and has been able to communicate with them clearly and powerfully at five times the horizon. They register beyond mountains. Whether they bend over the mountain tops or go right through the mountains, he last week declared...
...designed by Charles E. Nicholson, who built Sir Thomas Lipton's last two Shamrocks. Two days later, the Flame blew into Cowes at dawn under a trysail because her mainsail had been ripped the day before. In an ocean race-where time allowances based on sail area, beam, displacement are made to give the smaller yachts an even chance-crossing the finish line first is usually brief satisfaction. Winner of last week's race was not the Flame but the trim 21-ton, 37-ft. yawl that followed her into port six hours later-the famed Dorade, owned...
...which focuses on 2) a 5x4 in. sheet of thin mica. The mica is coated with microscopic particles of a secret light-sensitive material (3,000,000 particles. Dr. Zworykin computes). In the bulb's neck is 3) a small, efficient, oscillating cathode tube which sends a slim beam of electrons weaving over the light-sensitive particles on the mica...
...mosaic on the mica is in effect a photo-electric cell flattened out and each particle is a tiny photocell in itself. When lights and shadows of any scene fall upon those particles, the light waves set up a positive electro-magnetic tension in the particles. The oscillating cathode beam of electrons discharge that positive tension. Thus each particle is alternately charged by light waves and discharged by the electron beam 24 times a second, which is a comfortable frequency of illumination for the human...
...receiver of this radio system Dr. Zworykin calls a kinescope. It looks like the iconoscope. In the tube's neck is an oscillating cathode tube which weaves a pulsating beam of electrons over a fluorescent screen. Under the electron impacts the screen glows and thus shows the original iconoscoped scene...