Day in Engineering History Archive - June 23

June 23

1891: Wilhelm Weber, after whom the unit of magnetic flux is named, died. 1931: Aviators Wiley Post and Harold Gatty took off from New York on the first flight around the world in a single-engine plane. 1938: The Civil Aeronautics Authority (CAA, later the FAA) was established. 1960: The first solar powered, 2-way radio, coast-to-coast conversation was made by the U.S. Army Signal Corps, using 20-foot square panels consisting of 7,800 individual solar cells. 1961: An X-15 airplane became the first to exceed Mach 5, at Edwards AFB, CA. 1982: A record low temperature of -117 ºF was recorded at the South Pole. 1995: Dr. Jonas Salk, inventor of the polio vaccine, died. 1998: President Clinton called for U.N. sanctions against Iraq for WMDs reportedly found. 2008: Carl Eilers, the "Father of FM and TV Stereo," 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.