| 11. | The Townsend avalanche can have a large range of current densities.
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| 12. | Such devices have the advantages of both insulated gates and higher current density.
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| 13. | Superconductors lose their superconductivity when the current density gets too big.
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| 14. | The upper graph shows the current density as function of the overpotential ?.
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| 15. | The current density under the stimulation electrode is about 83?A per square cm.
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| 16. | First, a small region quenches directly in response to a high current density.
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| 17. | However, attempts to derive meaningful current density values will usually or always fail.
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| 18. | These reactions have 100 % efficiency over a wide range of current density.
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| 19. | Current density is around nine phone lines for every 100 inhabitants.
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| 20. | Less energy is required because of the lower current densities required.
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