Word: filaments
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Dates: during 1930-1939
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Winding its endless filament of space-time around the sun, the earth swung this week squarely between the sun and the moon. Earth's shadow did not turn the moon entirely dark, because enough sunlight was bent around the earth by atmospheric refraction to illuminate the satellite dimly. Since long red wavelengths of sunlight pass through layers of atmosphere more easily than short blue wavelengths, the color of the eclipsed moon was a dark, dull, coppery...
...world's largest bottlemaker; their chemist, Games Slayter, started perfecting fibre glass seven years ago. Corning (assets and profits secret) has specialized in technical refinements; it was to Corning that Thomas Edison went in 1878 asking for a little glass bubble in which to put his incandescent filament...
...instead of clinging to the knee and sharp-eyed women maintained they could tell the difference at a glance). The new fibre (made of complex nitrogen compounds, among them cadaverine*), as silky as silk itself, can be produced in sizes one-tenth to one-seventy-fifth finer than silk filament, and in some sizes has 150% greater tensile strength. Its elasticity is such that it can be stretched up to 700% of its normal length. So far no one has attempted to produce it commercially. Hence chemists do not know what it will cost, though it is estimated it will...
...working parts of the Harvard electron furnace are a small cylindrical metal cup, or crucible about one half inch in diameter and height; and two filament wires on opposite sides of the crucible...
...rough control over current, which electricians were able to exercise through changing the potentials on the positive and negative terminals of the original tubes, was rendered extremely sensitive and intricate with the addition, by Dr. Lee De Forest, of an independently charged grid of wire between the heated filament and the positively charged plate...