Machine performs half a day's manual labor in 5 minutes. Washington, , Dec. 22. Keegan of the Bureau of Standards, using the spectrophotometer to determine the different colors in a piece of cloth. It formerly took a man a half a day to make this spectrum analysis but now the machine does it in five minutes. The machine measures the %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% of light transmitted or reflected at various wave lengths in the visible spectrum

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