Death-Beam" is Silent This "death-beam," Dr. Tesla said, will operate silent!y but effectively at distances ''as far as a telescope could see an object on the ground and as far as the curvature of the earth would permit it." It will be invisible and will leave no marks behind it beyond its evidence of destruction. An army of 1,000,000 dead, annihilated in an instant, he said, would not reveal even under the most powerful microscope just what catastrophe had caused its destruction http://www.tfcbooks.com/teslafaq/q&a_011.htm#1934-07-11b
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