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Day in Engineering History Archive - June 3

June 3

Edwin White 1st American to Walk in Space - RF CafeDay in Engineering History June 3 Archive - RF Cafe1761: Henry Shrapnel, inventor of the Shrapnel Shell which exploded in the air, was born. 1864: Ransom Olds, founder of Oldsmobile, was born. 1902: Thomas Edison received a patent for a Reversible Galvanic Battery. 1913: Norman Krim, designer of Raytheon's CK722 germanium PNP transistor, was born. 1942: The 4-day long Battle of Midway, which was the turning-point in the Pacific Theater of Operation began. 1948: The 200-inch Hale reflector telescope at the Palomar Mountain Observatory in CA was dedicated. 1959: The first class graduated from the Air Force Academy in Colorado Springs, CO. 1965: Astronaut Edward White became the first American to "walk" in space, during the flight of Gemini 4. 1970: Emmett Culligan, founder of the "Hey Culligan Man" company, died. 1989: Chinese army troops began a sweep of Beijing to crush student-led pro-democracy demonstrations (stay tuned tomorrow). 1990: Robert Noyce, co-inventor of the integrated circuit and nicknamed "the Mayor of Silicon Valley", 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.

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Copyright: 1996 - 2024

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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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