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Day in Engineering History Archive February 25
February 25
1836: Samuel Colt patented his revolver. 1837: Thomas Davenport patented the first practical DC electric motor. 1870: Hiram Revels, a Republican from MS, became the first black member of the United States Senate. 1896: German chemist Ida Noddack, who co-discovered rhenium (named after the Rhine River), was born. 1901: United States Steel Corp. was incorporated by J.P. Morgan. 1908: The first tunnel under the Hudson River (Hudson & Manhattan railway tunnel) opened. 1928: The Federal Radio Commission (FRC) issued the first U.S. television license for Jenkins Laboratories. 1933: The 1st aircraft carrier, USS Ranger (CV-4), was launched. 1952: Brittan's Windscale plutonium plant began producing plutonium at Sellafield, on the Irish Sea coast. 1964: French aircraft designer Maurice Farman died. 1987: Arthur (Art) Collins, of Collins Radio Company, died.
Copyright: 1996 - 2026 |
About RF Cafe 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 lady's voice announced "You've Got Mail" when a new message arrived... |
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