Nikola Tesla Has a Tube by Which He Looks Through Three Bodies. Nikola Tesla was very busy with his experiments when I called yesterday afternoon at his laboratory in Houston street. He had a very elaborate apparatus at one end of the laboratory for the generation of the X rays. The vacuum tube was more than four feet long, and so great was the electrical power applied to it that it was filled with a brilliant fluorescence for its entire length. With this big, brilliant tube and his fluorescent screen, which is simply cloth coated with tungstate of calcium crystals, Mr. Tesla is able to see clear through a human body. and the other day, when he put three of his workmen in a row, he saw through them all.
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