A Faraday Is Worth 1,000 Faucis - WSJ

2022-09-24 01:51:43 By : Mr. JK zhao

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https://www.wsj.com/articles/a-faraday-is-worth-1-000-faucis-science-electricity-computer-dynamo-equity-fairness-stem-pandemic-pew-trust-experts-11663505143

The public’s trust in scientists is way down this year, according to the Pew Research Center. Ya think? “Fifteen days to slow the spread” and “flatten the curve” may have something to do with it. Some airlines still hand out disinfecting wipes as you board—to combat an airborne virus. Real scientists, like Michael Faraday (1791-1867), whose birthday is this week, would be rolling their eyes.

What did Faraday do? Well, if there was no Faraday, there would be no modern economy. A former bookbinder who studied magnetics, in 1820 he noted that electricity applied to a loop of wire could get a magnet to move through it, an insight that produced the electric motor found in every fan, vacuum cleaner, washing machine and electric car. Faraday then turned his own thinking inside out. In 1831 he invented the dynamo, an inverse motor. Moving a loop of wires around a fixed magnet can induce electricity. Place a dynamo next to running water, like Niagara Falls, and you can generate reliable electricity.

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Andy Kessler is the author of Inside View, a column he writes for The Wall Street Journal on technology and markets and where they intersect with culture. He won the 2019 Gerald Loeb Award for commentary. He is the author of several books including Wall Street Meat and Eat People. He used to design chips at Bell Labs before working on Wall Street for PaineWebber and Morgan Stanley and then as a founder of the hedge fund Velocity Capital.

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This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple copies, please contact Dow Jones Reprints at 1-800-843-0008 or visit www.djreprints.com.