Word: vacuums
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Dates: during 1920-1929
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...Angeles, Calif., U. S. Secretary of the Navy Cuntis D. Wilbur advertised an address before the Bible class which he once taught. He tried to reconcile Evolution and the Bible by dissenting from literal interpretation of the latter and rejecting "God in a vacuum...
...Audion Vacuum Tube Used...
...working with solutions it is necessary to use alternating current because direct current causes chemical action at the electrodes, which would cause gross errors in the measurement. Professor Jones uses as the source of the alternating current an audion vacuum tube hooked up with capacities and inductances so that it "howls", in the vernacular of the radio fan, although in this case it might better be described as "singing" because it gives a beautiful pure note of single frequency, and can be made to give any note desired within the range of audibility...
Back in 1909, one Fred Wardell became a "one-horse distributor" of electric vacuum cleaners. While he himself canvassed, his sole employee-a girl stenographer-ran his entire office. After four years of this, he proceeded to buy out the manufacturing end of the business, and acquired five men to help him run it. During the dark days of 1920, these five stuck to Wardell and his vacuum cleaners. Today, the Eureka Vacuum Cleaner Co., Detroit, is the largest manufacturing concern of its type in the world, with 250,000 shares of stock outstanding and no bonds or preferred ahead...
...present time there are 26 theories of color vision held by scientists and physicians. Experiments which attempt a psychological explanation of the ocular mechanism have been very drawn out, and as yet not altogether conclusive. Progress in experimentation upon the retina of the eye with a sensitive vacuum tube amplifier connected to a recording galvanometer has been unusually rapid...