Word: vacuum
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Dates: during 1930-1939
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...reasoned Inventor Claude, put warm surface sea water (between 79-86° F. in tropical seas) in a boiler, reduce the pressure and set it to boiling? Cold water could be brought up from 5,000 ft. below the sea's surface to condense the exhaust, maintain the vacuum. The cheap steam thus generated would whirl turbines, make electricity...
...path, a shot fired into the column of water will cause it to collapse. Science has no record of this having actually been done, for the good reason that no cannon projectile (unless perhaps a large explosive shell timed exactly) would be big enough to disrupt the enormous vacuum which supports the water column...
...damp air layer close to land or sea attempts to rise through a layer of cool, dry air. The warm air literally breaks a hole in the cooler air, rushes upward. Passing through the hole it assumes a whirling motion. The centrifugal force of the column develops a partial vacuum on the inside...
...ribbon of destruction across Missouri, Illinois, Indiana. In its wake were 695 dead and $16.500,000 worth of tangled, destroyed property.* Instead of transporting water, tornadoes carry chickens, small live stock, lumber, outhouses. Houses and barns in the path of a tornado are not blown down but explode. The vacuum column draws the air from around the house, the inside pressure forces the walls...
During the past year at the Cruft Laboratory Professor G. W. Pierce has been engaged in making some precision clocks for laboratory and observatory use. One of the clocks employs a pendulum enclosed in a vacuum chamber and kept at constant temperature. The pendulum has no escapement, driving spring or other mechanical attachment. Instead it is provided with a small slit through which a beam of light passes at each swing of the pendulum. The beam of light falls on a photoelectric cell and produces an electric current of short duration each second. These current pulses drive an auxiliary second...