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Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

  Day in Engineering History Archive March 13
March 13

Sir William Herschel discovered Uranus. Click here to return to the RF Cafe homepage.

1773: Joseph Priestley, discoverer elemental oxygen, ammonia, hydrochloric acid gas, carbon monoxide, sulfur dioxide, and oxides of nitrogen, was born. 1781: The planet Uranus was discovered by Sir William Herschel. 1842: Henry Shrapnel, inventor of the type of mortar that bears his name, died. 1855: Percival Lowell, the American astronomer who helped discover Pluto and believed that there was life on Mars, was born. 1933: Astronomer Robert Innes, who discovered Proxima Centauri, the closest star to our sun, died. 1937: Elihu Thomson, electrical engineer and inventor whose discoveries in the field of alternating current led to the development of successful alternating current motors, died. 1886: Albert Stevens, who took the first photograph of Earth showing its curvature, was born. 1989: A series of solar flares caused a violent magnetic storm that brought power outages over large regions of Canada.  1992: The FCC ruled companies can own 30 AM and 30 FM stations. 1998: German engineer Hans von Ohain, who developed the first operational jet engine (HeS3b used in the Heinkel He 178), died. 2012: Tom Johnson, founder of the Celestron telescope company, 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.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-) A couple 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.

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Webmaster:  Kirt Blattenberger, BSEE - KB3UON
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