A photocell is a kind of electronic component which can detect light. Once a photocell is lighted, electrons are emitted from one side to another side in the photocell so that a current can be transferred.
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... income for a household in the town is $69,819, and the median income for a family is $80,952. Males have a median income of $53,125 versus $36,008 for females. The per ...