dielectric constant: Quick Facts

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Also Known As	specific inductive capacity • relative permittivity

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Diagram of a multilayer capacitor with alternating thin layers of metal electrodes and ceramic dielectric inside a green plastic coating, and two wire leads extending outward.

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Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.

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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.

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