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- Solar cell (27643 bytes)
1: ... consisting of a large-area [[p-n junction]] [[diode]], which, in the presence of [[sunlight]] is capa...
5: ...r_cell.png|thumb|250x|right|A '''solar cell''', made from a poly-crystalline silicon wafer]]
15: ...2662&RS=PN/2402662 US2402662], "''Light sensitive device''"). Sven Ason Berglund had a prior patent co...
19: ... electric power output to the light power input. Ideally, near the equator at noon on a clear day, the...
21: ...rial for solar cells (and all other semiconductor devices) is crystalline [[silicon]]. Crystalline sil... - Mobile phone (30513 bytes)
2: A '''mobile phone''' is a device which behaves as a normal
3: [[telephone]] whilst being able to move over a wide area (compare [[cordless phone]] which acts as a ...
4: phones allow connections to be made to the
10: ...ic), [[Philips]], [[Samsung]], [[SAGEM|Sagem]], [[Sanyo]], [[Siemens AG|Siemens]], [[SK Teletech]], and [...
14: == Worldwide deployment ==
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