Dawn of the Electronic Age

Dawn of the Electronic Age

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... small electric motors solved both problems; they could run for years without maintenance, and it was then possible to design ... (The refrigerator worked by allowing a refrigerant to absorb heat inside the unit in changing from liquid to gas and using an ... Engineers found that the thermostat itself (which closed a circuit when the temperature fell below a set value) could not ... From 1922 to 1924, the price of the most commonly used refrigerator fell from $450 to $250.34 General Electricanbsp;...

Title:Dawn of the Electronic Age
Author: Frederik Nebeker
Publisher:John Wiley & Sons - 2009-05-06

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