FYI December 16, 2019

On This Day

1843 – The discovery of octonions by John T. Graves, who denoted them with a boldface O, was announced to his mathematician friend William Hamilton, discoverer of quaternions, in a letter on this date.
In mathematics, the octonions are a normed division algebra over the real numbers, meaning it is a hypercomplex number system; Octonions are usually represented by the capital letter O, using boldface O or blackboard bold O {\displaystyle \mathbb {O} } \mathbb {O} . Octonions have eight dimensions; twice the number of dimensions of the quaternions, of which they are an extension. They are noncommutative and nonassociative, but satisfy a weaker form of associativity; namely, they are alternative. They are also power associative.

Octonions are not as well known as the quaternions and complex numbers, which are much more widely studied and used. Octonions are related to exceptional structures in mathematics, among them the exceptional Lie groups. Octonions have applications in fields such as string theory, special relativity and quantum logic. Applying the Cayley–Dickson construction to the octonions produces the sedenions.



Born On This Day

1869 – Bertha Lamme Feicht, American electrical engineer (d. 1943)
Bertha Lamme Feicht (December 16, 1869 – November 20, 1943) was an American engineer. In 1893, she became the first woman to receive a degree in engineering from the Ohio State University.[1] She is considered to be the first American woman to graduate in a main discipline of engineering other than civil engineering.[2]

She was born Bertha Lamme on her family’s farm in Bethel Township near Springfield, Ohio on December 16, 1869.[3] After graduating from Olive Branch High School in 1889,[3] she followed in her brother, Benjamin G. Lamme’s footsteps and enrolled at Ohio State that fall.[2]

She graduated in 1893 with a degree in mechanical engineering with a specialty in electricity.[1][2][3] Her thesis was titled “An Analysis of Tests of a Westinghouse Railway Generator.”[2] The student newspaper reported that there was an outbreak of spontaneous applause when she received her degree.[3] She was then hired by Westinghouse[2] as its first female engineer.[4] She worked there until she married Russell S. Feicht, her supervisor and fellow Ohio State alumnus, on December 14, 1905.[2][3]

She had one child, Florence, born in 1910, who became a physicist for the U.S. Bureau of Mines.[2]

Bertha Lamme Feicht died in Pittsburgh on November 20, 1943[2] and was buried in Homewood Cemetery.

Her husband Russell died in April 1949.[4]

Some of her personal effects, including her slide rule, T-square, and diploma, are housed in the collections of the Heinz History Center in Pittsburgh.[2][3] The Westinghouse Educational Foundation, in conjunction with the Society of Women Engineers, created a scholarship named for her in 1973.[5]



GlacierHub Newsletter — Dec. 16, 2019
By Ernie Smith, Tedium: Know Who’s Calling? Over the past 35 years, our views on privacy and Caller ID technology have totally flipped. The concern used to be about the caller. Now, it’s the recipient.
By Jill Layton, Techwalla: Adorable Pics of Dogs Sitting on Santa’s Lap, You’re Welcome
Open Culture: How Andrew Wyeth Made a Painting: A Journey Into His Best-Known Work Christina’s World; Jimi Hendrix Hosts a Jam Session Where Jim Morrison Sings Drunkenly; Jimi Records the Moment for Posterity (1968); Blues Musician Plays a Soul-Stirring Version of “Amazing Grace” at His Mother’s Funeral and more ->
The Passive Voice: How to Kick the Next Book Blues; Kobo’s 10th Anniversary and more ->
By Ryan Saavedra, Greta Thunberg Tweets Pic Of Herself On Floor Of ‘Overcrowded’ Train. Train Company Rips Her For Not Telling Full Story.
The Guardian reported that in a two-part tweet, Deutsche Bahn (DB) responded to Thunberg’s tweet, writing, “Dear Greta, thank you for supporting us railroaders in the fight against climate change! We were happy that you travelled with us on Saturday in the ICE 74 … but it would have been even nicer had you also reported how friendly and competently you were looked after by our team at your seat in the first class.”
Fast Company Compass: How self-driving car tech could help drones monitor power lines to prevent wildfires

The Rural Blog: How Sandy Hook helped change the gun-control conversation and more ->
By MessyNessy, 13 Things I Found on the Internet Today (Vol. CDLXXXII): Mystery £50m Gustav Klimt masterpiece found hidden in a wall; Triple-decker buses of 1920s Berlin; The World’s First 3D-Printed Neighbourhood Now has its first Houses; The US’ first racially mixed drag revue show, 1966; The story of a Russian Family that hadn’t seen another Human for 40 Years and more ->
Kathryn’s Report: Abnormal Runway Contact: Cirrus SR20, N782JR; accident occurred October 23, 2018 at Greenville Downtown Airport (KGMU), Greenville County, South Carolina and more ->
By Tech2 News Staff: BedMachine: First high-precision map charted of land under Antarctica’s sprawling ice sheets
By Karen Gilchrist, CNBC: Ex-NASA engineer makes holiday comeback with updated trap to catch out doorstep delivery thieves
Jan Van Haver Level 10 Local Guide from Belgium, Google: My doctor’s advice turned me into a Local Guide
By Joe Pinkstone for Mailonline: Space ‘tow truck’ will clean up Earth’s orbit and remove defunct satellites
Associated Press/Fox News: Allies and former enemy Germany mark 75th anniversary of Battle of the Bulge
Colleen Hlywa, Beyond Bylines: Year-End Review: Top Social Media Campaigns of 2019
By Marisa Beyta, Beyond Bylines: Blog Profiles: Cooking Blogs


Little House Big Alaska: Mini Yule Logs