Science: 1,000,000 Volts

General Electric Research Laboratories in Schenectady last week unveiled a giant new X-ray machine, 1,000,000 volts strong, the biggest X-ray machine harnessed to industrial research. It is intended to find flaws not in flesh & bone but in big steel castings. G. E.'s 400,000-volt apparatus took an hour to X-ray four inches of steel. The new machine takes less than two minutes.

Million-volt X-rays, like tigers, are safer when caged. The walls of the 100-ft.-by-35-ft. building housing the machine are 14 inches of concrete plus twelve inches of brick. At one end of the room is a big door of 18-inch concrete...

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