Word: rates
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Dates: during 1920-1929
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...parts. But, unless they work a miracle, they cannot go on inventing new devices of improvement forever, and they will saturate the market for parts. Automobile companies have an unfailing market for replacement parts. Phonograph records wear out, and have to be replaced at a fairly rapid and constant rate, and fashions in records change. But the radio machine is singularly constant. It does not wear out. Its parts are singularly constant, too. You have to replace bulbs, but a bulb will last for a year or more. Batteries wear out, but the radio companies have no monopoly on batteries...
...There are mechanical expenses to begin with. At first important musicians and verbal entertainers were willing to perform gratis for broadcasting, in consideration of the advertising. But soon, when nearly everybody had sung into the radio, the advertising value diminished. All that the radio companies could get were third-rate performers. They turned on the phonograph for the radio. That made the affair ridiculous. They have not done it so much lately. Protective organizations for musicians demanded pay for radio service. Orchestras still continue to allow the broadcasting of their concerts. At big sporting events spoken reports are broadcast...
...fistula, or tube, connecting the stomach of a dog with the surface, keeping the animal free from pain and under the most normal conditions possible. By this means he studied the flow of the gastric and pancreatic juices under varying conditions, proving that the secretions vary in quantity, rate and digestive power with the nature of the food...
...shaft was making only five revolutions an hour. It has lifted 12 tons and has not reached its limit. The gear has no cogwheels nor even teeth, but turns on ball bearings between rollers of various diameters, slightly off center. The difference in diameters establishes the rate of reduction in speed and increase of power...
...principle will make possible the elimination of complicated gear trains in automobiles, elevators, air compressors, belt conveyors, spinning and weaving, metal shearing and punching machines, and all others where the main shafting or drive is run at a high rate of speed...