Posted December 20, 2020
Here I am updating my post for 12/20/2009:
On this day in 1879, Thomas Edison privately demonstrated his incandescent light bulb at his Menlo Park research lab.
Remember, Edison didn't invent or even discover electricity (known from ancient times), and he didn't invent the first light bulb (Sir Humphrey Davy made an arc lamp in 1809, and Frederick de Moleyns got the first patent for an incandescent bulb in 1841). What Edison did was to make the first commercially practical light bulb and an entire system of electric lighting. Edison said on the last day of 1879, "We will make electricity so cheap that only the rich will burn candles."
<--Broadway (Time Square) in 1904
On this day in 1901, Robert J. Van de Graaf was born. This American physicist invented a high-voltage electrostatic generator, which looks like a large silver ball mounted on a pedestal. It makes your hair stand on end, but more importantly, it can be used as a particle accelerator in physics research.
On this day in 1938, Russian-American inventor Vladimir Zworykin (sometimes called the “true father of television,” although most give Philo Farnsworth that honor) was finally granted a patent for his iconoscope, an early television camera. (This camera had already been used for the historic TV transmission of the 1936 Olympic Games in Berlin.)
On this day in 1951, the first electricity ever generated by nuclear energy was created near Arco, Idaho. (The Experimental Breeder Reactor in Idaho produced enough energy to light four 200-watt light bulbs that day.)
By 1952, the Paley Commission was already somewhat pessimistic about nuclear power and called for “aggressive research in the whole field of solar energy.” And by 1955, the Arco Reactor was the first reactor in the U.S. to experience partial meltdown.
Do some electricity experiments!
Build electric circuits with information found here.
Here is a great explanation of how electricity works.
Here are some games about the electromagnetic force.
Here is an interactive website about electricity.
Here is an interactive website about electricity.
Also on this date:
(original post)
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