Roentgen discovered x-rays by noticing the fluorescent glow of ______________ during one of his experiments with a cathode ray tube?
A. Calcium Tungstate
B. Barium Sulfate
C. Barium Platinocyanide
D. Cellulose Nitrate
Answer:C
Roentgen discovered x-rays by noticing the fluorescent glow of ______________ during one of his experiments with a cathode ray tube?
A. Calcium Tungstate B. Barium Sulfate C. Barium Platinocyanide D. Cellulose Nitrate