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→About the Photoelectric Effect
: The '''Photoelectric Effect''' is proof of the [[photon]] model of [[light]].
: The emission of [[photoelectron]]s depends upon the [[frequency]] of [[light]] incident upon a [[metal]]'s surface. Below the [[Threshold Frequency|threshold frequency]] there are no [[photoelectrons]] emitted.
: Below the [[Threshold Frequency|threshold frequencefrequency]] the intensity of the [[light]] has no effect on the emission of [[photoelectron]]s (none are emitted). However, above the [[Threshold Frequency|threshold frequencefrequency]] an increase in the intensity of [[light]] will increase the number of [[photoelectron]]s emitted, but will not affect their maximum [[Kinetic Energy|kinetic energy]].