Some chemicals which are exposed to sunlight will continue to glow even when they are placed in a dark room. This phenomenon is known as
A. alpha emission.
B. beta emission.
C. fluorescence.
D. X-rays.
Answer:C
Some chemicals which are exposed to sunlight will continue to glow even when they are placed in a dark room. This phenomenon is known as
A. alpha emission. B. beta emission. C. fluorescence. D. X-rays.