Huge Bulb Holds Kneeling Girl (Nov, 1934)
Huge Bulb Holds Kneeling Girl
BUILT as a laboratory exhibit, a mammoth lamp bulb, weighing 50 pounds and standing 56 inches high, is large enough to accommodate a kneeling girl.
When exhausted, to create a vacuum within, the quarter-inch walls must withstand a crushing strain of 40,000 pound:; and a tremendous temperature generated by incandescent tungsten wire thicker than a fountain pen.
The filament of this giant lamp would operate at perhaps half the temperature of the sun’s atmosphere, equivalent to an energy of 135 horsepower. To conserve this heat the bulb is filled with 200 quarts of a rather rare gas called argon.