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Can you please explain in simple terms what an electret is then, and give some examples to clarify.?
Quote from: Thebox on 05/08/2015 10:01:53Can you please explain in simple terms what an electret is then, and give some examples to clarify.?Shame on you for quoting a definition but not finding out what it is. This once I will take pity.In very simple cut down terms, think capacitor with permanent charge, just like a permanent magnet.(in reality both are never really permanent)Often is a piece of dielectric plastic. Look up electret microphone for an eg of practical application.Next time pretend you are researching a subject.
Is the sun an elecret and produces an electrostatic polarised field opposed to matters magnetic fields?