Word: vacuum
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Dates: during 1930-1939
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...studios and broadcasts played to packed houses. (This trick was used earlier in Manhattan's Radio City Music Hall, is upset only by an uncommonly dressy audience. For starched-shirt bosoms are poor absorbers, bounce sounds back toward the stage.) Unseen were 20 miles of cable, some 500 vacuum tubes, 100 amplifiers, a gasoline-driven generator for emergency use in Hollywood's next flood, many another foresighted gadget...
Distilling vitamins requires a very high vacuum. Scientists do not expect to make a perfect vacuum, any more than they expect to reach the cold of absolute zero, but they try to get as close to perfection as possible...
Mechanical pumps have a certain limit beyond which they cannot decrease the vacuum chamber pressure any further. So Dr. Hickman has designed a sort of chemical pump which goes to work after the mechanical pump has done its best. A spray of oil vapor is shot in one side of the chamber, out the other. Some of the gas molecules roaming inside are struck by the oil particles, adhere to them, are thus escorted outside through the oil vapor exit...
...part with his cyclotron is that he is now engaged in the most significant problem of his career: the effect of neutron rays on cancer of human beings. The cyclotron whirls ions of heavy hydrogen (deuterons) between the poles of a huge electromagnet, then hurls them into a drumlike vacuum chamber. When they are charged with nearly eight million volts of energy, the ions are shot against a target of light metal, usually beryllium. The bullets knock out streams of neutrons, tiny particles about the same weight as protons but carrying no electric charge...
...wheelbase, longest any Plymouth ever had. Its five Roadkings ($740), eight DeLuxes ($805), all turn up 82 h.p. Catchiest number showing is the convertible coupé, with a top that slides magically into place or back at the twist of a dashboard knob. Secret: intake vacuum power...