Day in Engineering History Archive - May 16

May 16

Chebyshev logo

1821: Russian mathematician Pafnuty Chebyshev, after whom the Chebyshev filter transfer function is named, was born. 1830: Mathematician Jean-Baptiste-Joseph Fourier died. 1831: David Hughes, inventor of the carbon microphone, was born. 1866: Root beer was invented by Charles Hires. 1881: The first electric tram for the public started service in Germany. 1866: The nickel replaced the half-dime coin. 1933: Thomas Edison was issued his last patent - for an electro-plating device. 1946: Jack Mullin showed the world the first magnetic tape recorder. 1960: A synthetic ruby crystal laser was first operated at Hughes Research Laboratories. 1963: After 22 Earth orbits Gordon Cooper returned to Earth, ending Project Mercury. 1975: Junko Tabei became the first woman to reach the summit of Mount Everest. 1992: The space shuttle Endeavour completed its maiden voyage. 2002: Star Wars: Episode II - Attack of the Clones, was released in theaters.

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Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. Many years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.