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b) The “electric eye" makes use of the photoelectric effect. In addition to opening doors in some supermarkets,where else have you observed use of the photoelectric effect? c) Although energy

is emitted by all bodies, use the photon theory of light to suggest why our eyes cannot see in the dark. d) Why is it impossible to determine simultaneously the position and the velocity of an electron? a) Sun tanning produces cell damage in the skin. Why is ultraviolet light capable of producing this damage while infrared radiation is not? b) The “electric eye" makes use of th photoelectric effect. In addition to opening doors in some supermarkets,where else have you observed use of the photoelectric effect?

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