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dtgk 21/1

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dwil | 17:56 Sun 22nd Jan 2006 | Quizzes & Puzzles
4 Answers
28d material that has a permanent electric charge polarisation e - - c - r - t
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Electret

electret


It has been answered at least twice before.

Electret
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Thanks to all. I did look through 2ce but didn't see previous 2 answers!

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dtgk 21/1

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