Day in Engineering History Archive - November 25

November 25

1792: The Old Farmer's Almanac was first published. 1844: Karl Benz, a German mechanical engineer who designed built the world's first practical auto powered by an internal-combustion engine, was born. 1905: The first U.S. advertisement for a complete radio set, the "Telimco Wireless Telegraph Outfit," appeared in this day's issue of Scientific American. 1920: The first play-by-play broadcast of a football game (between the University of Texas and Texas A&M) was aired in College Station, TX. 1948: Cable television was invented by Ed Parsons. 1958: Charles Kettering, co-founder of Delco Products and inventor of the electric starter and spark plugs for cars, died. 1973: The maximum speed limit in the U.S. was cut to 55 mph as an energy conservation measure during oil embargo. 1975: Robert Ledley granted a patent for a "diagnostic X-ray systems," known as CAT scans.

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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.