Science: Electronic Peeping Tom

Japanese nightcrawlers, toward the end of the war, often crawled in vain. They would sneak toward U.S. lines, trusting the friendly night. Then out of the silent darkness, a well-aimed bullet would pick them off. Could U.S. snipers see in the dark? Last week, the Army said yes and told how.

The U.S. sniper, looking through a fat telescope ("sniperscope") mounted on his carbine, saw a bright green picture of everything in front of him. The gadget flooded his field of fire with invisible infra-red light. Jap uniforms showed up clearer than in daytime....

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