Word: shields
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Dates: during 1940-1949
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Across the river in Manhattan, the Salvation Army also pondered the tug of television. Announced the Salvationists: if they could raise the money, a receiver would be installed in the Bowery Red Shield Club by World Series time, "so that men who are determined not to drink will not be lured into temptation and barrooms by television...
...father] are one hand whose bonds in Allah will never be dissevered . . . They are the roaring lions and the suns at forenoon . . . Palestine is a bloody finger whose illness may be cured by resolution . . . Neither the Security Council nor falling bombs nor fire nor steel can dissuade us . . . We shield ourselves with Allah and the Koran...
Neutrinos are perhaps two-thousandths the mass of an electron, and have no electric charge by which they can be influenced electrically. They pass right through matter as if it weren't there. Physicists have calculated, says Dr. Gamow, that it would take a lead shield 200 million million miles thick to stop speeding neutrinos...
...Light Shield. Airplanes cannot carry massive concrete shields like those around the piles at Oak Ridge and Hanford. A lighter shield is needed. The most deadly radiations are neutrons and gamma rays...
Gamma rays have to be absorbed by dense materials like lead. "A material which is good for stopping gamma rays," says Dr. Kalitinsky, "may not be the best when gamma rays and neutrons are considered together, and a material which is good for the innermost part of the shield may not be the best for the outer layers. There is, therefore, considerable room for weight reduction by ingenious design...