Word: vacuum
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Dates: during 1920-1929
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Alfred Lee Loomis, Manhattan banker and physicist, and Frank E. Lutz, curator of insects at the American Museum of Natural History, played scientific tricks with a cricket. They played the black bug in a vacuum and in a container of compressed air; for ten minutes they whirled him in a machine 1,200 times a minute. The insect did not die because air pockets j in his hard coat apparently protected him. Beside these insect researches, Mr. Loomis, vice president of Bonbright & Co., experiments in his private laboratory at Tuxedo Park, N. Y., on the effect of "super-sounds...
...wherever electrical technicians congregate, but little elsewhere. Graduated from Lehigh University in 1889 he at once found work with Thomas Alva Edison's Edison Co. Later he organized his own light and electric companies and, after 18 years, sold them to General Electric. Four years ago he invented vacuum bulbs used in telephotography (sending still pictures by electricity or radio); three years ago he improved the bulb so that it would transmit moving pictures. His present researches seek to make lamps that will give light without heat. Towards that goal he has made some progress. On his inventions...
Inside the box were electro-magnetic fields, actuated (through radio vacuum tubes) by an electric current that alternated at stupendously rapid frequencies. The alternations, as is the case with radio broadcasting waves, were too rapid for human ears to hear. But Professor Theremin, as anyone can do with a heterodyne radio receiving set, put one series of his electro-magnet waves against another series and thereby deadened a sufficient number of the millions of waves speeding silently through the box each second to leave few enough oscillations for audibility. (The highest number of waves that the ordinary human...
...Detroit factory of the Eureka Vacuum Cleaner Co., President Fred Wardell long ago established the conveyor system for assembling his vacuum cleaners. Over continuously moving belts and rollers there pass to workers the switches, wire, handles, motors, wheels, aluminum casings, bags and other parts that make up the Eureka cleaner. The system produces 1,500 cleaners a day, 300,000 a year. Last week it halted for a few moments for a ceremony- the assembling of the 2,000,000th vacuum cleaner which the company has manufactured since President Wardell created it in 1910. The 2,000,000th machine...
...complicated. Inventor Luce's device is simpler and accomplishes less work. But it is no less effective within its range. To demonstrate it at the Waco Cotton Fair, he hitched a mule to a two-wheeled wagon which bore the contraption, a pump that sucked air like a vacuum-cleaner through long flexible tubes. One man led the mule and cart between ripe cotton bushes. At each side of the mule walked a man with a tube from the vacuum pump strapped to a wrist. These men darted their hands at ripe cotton; the tubes with a soft hiss...