Day in Engineering History Archive - March 10

March 10

1762: German chemist Jeremias Richter, who discovered law of equivalent proportions, was born. 1876: Alexander Graham Bell made the successful call with the telephone, when he spoke the words "Mr. Watson, come here, I want to see you." 1880: The Salvation Army began operation in the U.S. 1902: Alec Harley Reeves, inventor of pulse coded modulation (PCM), was born. 1948: Herbert H. Hoover became the first civilian pilot to exceed the speed of sound in the Bell X-1 research aircraft at Edwards AFB, CA. 1971: The U.S. Senate approved an amendment to lower the voting age to 18. 1977: The rings of Uranus were discovered. 1982: A rare syzygy occurred where all 9 planets aligned on same side of Sun. 2000: The NASDAQ index peaked at its final high 5,132.52, signaling the end of the Dot-Com boom. 2006: NASA's Mars Reconnaissance Orbiter arrived at Mars. 2022: Inventor, engineer, author, and speaker Robert W. Lucky died.

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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.