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Lewis Miller (philanthropist)

Lewis Miller (July 24, 1829 – February 17, 1899) was an Ohio businessman and philanthropist who made a fortune in the late 19th century as inventor of the first combine (harvester-reaper machine) with ...

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Diode

In electronics, a diode is a two-terminal electronic component with an asymmetric transfer characteristic, with low (ideally zero) resistance to current flow in one direction, and high resistance in t ...

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Definition

Phonograph

The phonograph, record player, or gramophone (from the Greek: γράμμα, gramma, "letter" and φωνή, phōnē, "voice"), is a device introduced in 1877 for the recording and reproduction ...