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| Keywords: X-RayStandardization 025.jpg Dr L S Taylor chief of the x-ray section at NBS making adjustments to equipment before a test - Shown is the target room of the x-ray laboratory where x-rays were bent at an angle of 90 degrees directly into the ionization chamber right half of the picture which provided the basic measurement information All of the equipment was turned on and operated from a remote control station located seventy-five feet away from the target room which was heavily protected against radiation by concrete and lead barriers National Institute of Standards and Technology National Institute of Standards and Technology PD-USGov-NIST PD-USGov National Bureau of Standards National Institute of Standards and Technology X-rays Standardization | ||||
