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. pv cells are made of special materials called semiconductors (usually silicon). when light hits the solar cell, part of the energy absorbed and electrons from the atoms in the semiconductor material are released. when electrical conductors are attached to the positive and negative sides, thus forming...
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wait for the second towel because the machine has to think about it for a few seconds first, scanning you with its cylon eye to deem your worthiness and consider its extermination options. but here's the catch: the electronic one is often out of order. either it runs out of power (it turns out that batteries...
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