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.
No Faraday, no communications. By running electricity down a long wire to an electromagnetic relay switch, you can ring a bell. This innovation became the telegraph, telephone and today’s wireless devices, which are all based on Faraday’s induction.
No Faraday, no computers. The 1945 Eniac computer used those same electromagnetic relays, open representing zero and closed representing one. While today’s semiconductors are based on the quantum effect—thank theoretical physicists Niels Bohr and Max Planck for that—they need gobs of electricity for power, which Faraday’s work helps generate.
Faraday took science seriously: “Conclusions are drawn from data, and its principles supported by evidence from facts.” Facts! Imagine that.
Why is science so maligned these days? To me, the turning point came in 1984, with (fictional) Columbia professor and ghostbuster Dr. Peter Venkman, played by Bill Murray, who when questioned said, “Back off, man. I’m a scientist.”
