Word: exhaustingly
(lookup in dictionary)
(lookup stats)
Dates: during 1930-1939
Sort By: most recent first
(reverse)
...film of glass would serve, were it stout enough to withstand the suction of the Lenard vacuum tubes. Dr. Slack rounds the end of his vacuum tube until it resembles the butt of a test tube. Then he blows the glass to gossamer thinness. A last step is to exhaust the tube. This creates a knob at the tube's end, a knob so frail that when shattered its glassy film floats in air. so stout that it is as strong as steel. Result is that a pressure of only 30,000 volts is needed to fire the cathode rays...
...illuminated by constant artificial daylight containing a small percent of healthy ultraviolet, will breathe air which has been washed, heated, humidified. The ten million cubic feet of air will be changed every ten minutes. Contaminating gases and machine dirt are to be drawn out through hoods into an underground exhaust system...
...Miller Reese Hutchison (dictograph, klaxon horn, acousticon) resolved to make some contribution to safety and efficiency of aircraft. Last week Dr. Hutchison, onetime (1913-17) chief engineer and personal representative of Thomas Alva Edison, brought forth his offering: "Moto-Vita," a device which measures the unburned gases in engine exhaust, enables a pilot to adjust his carburetor accurately in flight for complete combustion of fuel and, consequently, elimination of waste. Capt. Frank Monroe Hawks tried the Moto-Vita on a flight to Memphis, informally reported a fuel saving between 30% and 40%. While Dr. Hutchison's motive...
Engineers examined with interest the world's fifth great vehicular tunnel built since automobile exhaust gases presented ventilation problems. The other four: Holland Tunnel, joining Manhattan and Jersey City; Oakland Tube, connecting Oakland and Alameda, Calif.; Mersey River Tunnel, between Liverpool and Birkenhead, England; the Liberty Tubes, 5,800 ft. long, mountain tunnels, sole route from the South to Pittsburgh. Ancient sub-river vehicular tunnels without protection from motorgas exist at Glasgow and under the Elbe at Hamburg. Two old tunnels under the Thames at London have been equipped with suction-&-exhaust fans. First tunnel to require...
...principle. Among many other efforts, one like hers was created by one William Deal and exhibited in the 1929 Aeronautical Exposition of the American Legion in Manhattan by Curran Machine Works of Long Island City. Other methods under experiment are:1) to reduce the speed of the exhaust gases by rapid cooling and 2) employment of sound-absorbing material in the muffler -with the corresponding danger of the material catching fire...