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e7356c2d090913a5f2ef52db605526381
2011-01-26 10:01:59

Solar cells are made from semiconductors whose ability to respond to light is determined by their band gaps (energy gaps).


Word of the Day
ethnarch
  • The governor of a province or people.
The word 'ethnarch' comes from a Greek word meaning 'ruler of a tribe or nation'.
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