•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Job Board

About RF Cafe™

Sitemap

Day in Engineering History Archive - March 30

| 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.

March 30

1st Recorded Sighting of Halley's Comet - Please click here to visit RF Cafe.

239 B.C.: The first recorded passage of Halley's Comet was noted by Chinese astronomers. 1791: The French Académie des sciences finally decided that a metre would be a 1/10 000 000 of the distance between the north pole and the equator. 1811: Robert Bunsen, of laboratory burner fame, was born. 1842: Dr. Crawford Long first used ether as anesthetic during minor operation. 1858: The first U.S. patent was issued for a combination lead pencil and eraser. 1879: German astronomer Bernhard Schmidt, who invented the type of reflecting telescope named after him (Schmidt telescope, Schmidt-Cassegrain, etc.), was born. 1891: Arthur Herrington, designer of the famous Jeep, was born. 1914: John Poynting, who introduced a theorem that assigns a value to the rate of flow of electromagnetic energy known as the Poynting vector, died. 1981: President Reagan was shot and wounded by John Hinkley. 1993: Charlie Brown of the Peanuts comic strip (my favorite), hit his first home run. 2006: Marcos César Pontes became the first Brazilian in space.
Custom Search
More than 10,000 searchable pages indexed.

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger... single-handedly redefining what an engineering website should be.

View the YouTube RF Cafe Intro Video 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