| 21. | In metals, electrons with no binding energy are called free electrons.
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| 22. | The pipe is the wire, the ballbearings are the free electrons.
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| 23. | The transparent materials I know ( glass, plastic ) do not provide free electrons.
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| 24. | Only the free electron gas case can be solved exactly.
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| 25. | This is especially useful in determining the free electron content of a planetary ionosphere.
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| 26. | In a STP, free electrons exist for only about 11 nanoseconds before being captured.
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| 27. | The triggering spark also generates ultraviolet light and free electrons in the main gap.
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| 28. | Broad bands in dense materials are better described by a nearly free electron model.
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| 29. | Within a cubic centimeter of atmosphere, about 3000 free electrons are generated every second.
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| 30. | Newton s equation of motion of the free electrons is
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