Day in Engineering History Archive - August 15

August 15

Click here to return to the RF Cafe homepage.1635: The first recorded hurricane in America occurred at Plymouth Colony. 1852: Johan Gadolin, discoverer of the element yttrium (the Y in YIG), died. 1877: Thomas Edison coined the telephone greeting "Hello," instead of "Ahoy," suggested by Alexander Graham Bell. 1892: Louis de Broglie, known for his research on quantum theory and for his discovery of the wave nature of electrons, was born. 1914: The Panama Canal was opened to traffic as an American ship sailed from the Atlantic to the Pacific Ocean (the Chinese government now operates the canal). 1935: Wiley Post, who made the first round-the-world solo flight (15,596 miles) in his Lockheed Vega 5B single-engine aircraft, died. 1945: Emperor Hirohito broadcast over the radio that Japan had accepted terms for unconditional surrender, ending World War II. 1948: The Republic of Korea was proclaimed - ROK Constitution. 1994: The National Institute of Standards and Technology (NIST) announced it had cooled atoms to 700 nanokelvins, the coldest temperature ever recorded. 1997: The Dow Jones dropped 247.37 points. 2001: Astronomers announced the discovery of the first solar system outside our own. 2006: The Voyager 1 spacecraft reached the milestone of being 100 AU from the sun.

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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.