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
Correct Answer:
Verified
Correct Answer:
Verified
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