Day in Engineering History Archive - June 9

June 9

1812: Johann Galle, who was the first to observe Neptune, was born. 1905: Albert Einstein published his analysis of Planck's quantum theory and its application to light. 1931: Robert H. Goddard patented a rocket-fueled aircraft design. 1934: Donald Duck made his debut in "The Wise Little Hen."1943: U.S. Congress mandated that employers withhold income tax on employees (a dark day in history). 1959: The first ballistic missile carrying submarine, the USS George Washington, was launched. 1989: "Star Trek V: The Final Frontier," premiered. 1997: The British lease on New Territories in Hong Kong expired. 2004: Xilinx co-founder Bernard Vonderschmitt died.

| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |

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.