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10 cards from this deck
Heinrich Hertz in 1887
Light striking metal emits electrons
Min frequency needed for photocurrent
Higher intensity → more photoelectrons
None - instantaneous
Voltage stopping all photoelectrons
Kmax=VseK_{\text{max}} = V_s eKmax=Vse
Min energy to remove electron from metal surface
Quartz allows UV; glass absorbs it
Classical: emission possible. Actual: none
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