Energy vs. Wavelength; Psuedo-Photoelectric Effect
Energy vs. Wavelength; Psuedo-Photoelectric Effect
Demo Number
260
Location
Shelf 45
Description
Different colors of LED lights of similar intensity are shone on a phosphorescent sheet and the amount of glow is compared.
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Tips
Shorter wavelength lights are much more effective at illuminating the sheet than long-wavelength lights. Below a certain threshold, the light cannot make the sheet glow at all no matter how long it shines, analogous to the photoelectric effect.