Barium Platinocyanide Was the Material in Dr

question 48

Multiple Choice

Barium platinocyanide was the material in Dr. Roentgen's laboratory that

• A) covered the cathode ray tube
• B) fluoresced when the cathode ray tube was energized
• C) was used to produce the radiograph of Bertha Roentgen's hand
• D) protected the people in the room from the x-rays

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