Fluorescence and Phosphorescence

Various fluorescent materials are observed to emit visible light in a dark room while being illuminated by ultraviolet light. It is observed that when the same materials are illuminated by white light, the colors are different from when illuminated by ultraviolet light. In another experiment, a phosphorescent ball which has been kept in the dark under a towel is then exposed to white light from a slide projector. The room is darkened and the ball is observed to emit light.
Equipment:
Various fluorescent materials
Ultraviolet light source
Phosphorescent ball
Towel
Slide projector light source
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This video is part of the project "Videos of Physics Demonstrations", which is created by Dr. Galli and Dr. Amiri of Physics Department, Weber State University. To access the full library of the videos, please visit this link: www.weber.edu/...
Links to University and Department:
Weber State University Homepage: www.weber.edu/
WSU Physics Department: www.weber.edu/...