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Serbian inventor, electrical engineer, mechanical engineer, and futurist Nikola Tesla was born #OTD in 1856.

Some of Tesla´s inventions and innovations: alternating Current (AC) system; induction motor; Tesla coil; wireless transmission of electricity; radio technology; remote control; neon and fluorescent lighting; X-Ray technology; Tesla turbine; oscillators and frequency generators.

https://en.wikipedia.org/wiki/Nikola_Tesla

Books by Nikola Tesla at PG:
https://www.gutenberg.org/ebooks/author/5067

#books #science #technology

Nikola Tesla, with Rudjer Boscovich's book "Theoria Philosophiae Naturalis", in front of the spiral coil of his high-voltage Tesla coil transformer at his East Houston St., New York, laboratory. Tesla is typically shown standing confidently, either holding the book or with it placed on a nearby table, symbolizing the connection between theoretical knowledge and practical application. He is dressed formally, reflecting his professional demeanor and the serious nature of his work.

Books by Tesla, Nikola (sorted by popularity)

Project Gutenberg offers 73,924 free eBooks for Kindle, iPad, Nook, Android, and iPhone.
Project Gutenberg
#technology #science #books #otd

12 October 1892 | Edith Stein was born in Wrocław. She was a German Jewish philosopher who converted to Catholicism, became a theologian & a Carmelite nun. She was murdered in Auschwitz in August of 1942.

#Auschwitz #Birkenau #Holocaust #Shoah #Jews #history #histodons #Nazis #Germany #NeverForget #ww2 #Memorial #Remember #memory #otd #facts

A photo of Edith Stein sitting in an arm chair and holind a book.
#Germany #jews #history #Nazis #ww2 #Auschwitz #otd #Memory #NeverForget #histodons #memorial #remember #holocaust #shoah #facts #Birkenau

Another day, another fantastic #Friendica feature that I found. If you've already been for a while, you can check your feed from a year ago*. While you are in your newsfeed, simply click on the #year you want to check on the Archive pane on the left (keep scrolling to find it), then click on On this day. You'll get all the posts that were sent to your instance exactly one year ago. Isn't it wonderful to walk through your personal memory lane from time to time? 😁

#fediverse #friendica #features #onthisday #OTD #feed #newsfeed
Image/photo

*I guess it depends on how long have you been to a certain Friendica server, not sure if posts are displayed if you moved your account to a different server for less than a year before. I'm also not sure if this depends on a certain plugin, or if it's a baked-in functionality.

#friendica #fediverse #OnThisDay #otd #feed #year #features #newsfeed

Astronomer Vera Rubin was born #OTD in 1928.

Her work on galactic rotation curves became one of the main pieces of evidence for the existence of dark matter, and she deserved a Nobel Prize for it.

Image: Vassar College / Emilio Segrè Visual Archives
Black and white photo of a young Vera Rubin – likely in her teens or twenties – looking through the eyepiece of a long telescope. She wears a blouse or dress with short sleeves and a grid print. Her wavy hair is shoulder length, and there is a wall behind her composed of two-by-fours and wood boards. Her right hand touches the eyepiece, and her left hand is turning a small adjustment knob on the side of the telescope.
#otd

"Sem vergonha o não digo, que a razão De algum não ser por versos excelente, É não se ver prezado o verso e rima, Porque quem não sabe arte, não na estima."
Os Lusíadas (1572), Canto V

Luís Vaz de Camões died #OTD in 1580. He wrote a considerable amount of lyrical poetry & drama but is best remembered for his epic work Os Lusíadas. His collection of poetry The Parnasum of Luís de Camões was lost during his life.

Books by Luís de Camões at PG:
https://www.gutenberg.org/ebooks/author/1183

#books #literature #poetry
Portrait c. 1577. via @wikipedia
Cover of the 1572 edition of Os Lusíadas. via @wikipedia

Books by Camões, Luís de (sorted by popularity)

Project Gutenberg offers 70,877 free eBooks for Kindle, iPad, Nook, Android, and iPhone.
Project Gutenberg
#poetry #books #literature #otd

Geophysicist and seismologist Inge Lehmann was born #OTD in 1888.

In 1936 she discovered the existence of a solid core at the center of the Earth, based on a careful analysis of global seismic records from a 1929 earthquake near New Zealand.

Image: Royal Danish Library
Sepia-tinted black and white photo of Inge Lehmann. She is looking directly at the camera, with a neutral expression.
#otd

27 December 1924 | A Polish Jew Jakub (Jack) Fogel was born in Turek.

In Auschwitz from 27 August 1943
No. 140964
Transferred to Fürstengrube sub-camp.

In 1945 he was on a death march, ending up on one of the ships in the Lubeck Bay that were mistakenly bombed by the British RAF on 3 May 1945. More than 7,000 prisoners were killed. Jakub survived.

After the war he emigrated to Australia.
Today he turns 98.
Happy birthday.

#Auschwitz #history #ww2 #Holocaust #birthday #otd #Turek #Australia
A man in white shirt and dark trousers standing by a bicycle. Behind him a meadow and a three-story building.
A portrait photo of an older man in a glasses. His head is leaned against his hand.
#history #Australia #birthday #ww2 #Auschwitz #otd #holocaust #Turek

Sister Mary Kenneth Keller was born #OTD in 1913. She worked with John G. Kemeny and Thomas E. Kurtz on the design and implementation of Beginner’s All Purpose Symbolic Instruction Code — BASIC — and was the first woman in the US to earn a PhD in Computer Science.

10 PRINT “HAPPY BIRTHDAY”
20 GOTO 10
Black and white photo of a smiling nun in a habit standing next to a large bank of old computer equipment.
#otd

Today is the 50th anniversary of the last time humans went to the Moon.

Apollo 17, the final mission of the Apollo program and the last time we ventured beyond low Earth orbit, launched from Kennedy Space Center #OTD in 1972.

Images: NASA https://flic.kr/s/aHskm64ger
#Apollo50
Color photo of the lunar lander returning to the orbiter above the Moon's surface. A color photo of the Apollo 17 lunar rover. The sun is just outside the frame, causing long shadows and substantial optical artifacts. An astronaut in the distance is seen in profile. The rover has a large radio dish mounted on the back.
One of the Apollo 17 astronauts standing with the rose. Their visor is a reflective gold color, while copper-colored foil wraps many of the components of the rover. A large, umbrella-like radio dish is mounted on the from of the rover. A large gray hill rises in the background. A color photo of Earth taken by the Apollo 17 astronauts. The arc of the planet cuts down the middle of the photo, with part of Earth occupying the left-hand side of the frame. There is a great deal of swirling white cloud cover over blue oceans and brown land masses. Madagascar is visible, as well as parts of Mozambique and Zimbabwe.

Apollo 17 Magazine 148/NN

(Color) Earth, LM Inspection, Orbital; NASA photographs; unprocessed 1800 dpi Hasselblad film scans by Johnson Space Center, circa 2005
Project Apollo Archive (Flickr)
#otd #apollo50

#art/#history: there's always a great woman behind a great man & this proves true for betty davis (born #otd in 1945). she introduced miles davis to psychedelia (& hendrix!), but she also wrote & recorded 3 of the ballsiest funk fusion LPs you'll ever hear - if you can find 'em.
life with miles wasn't easy (he accused betty of having an affair with jimi hendrix, which really pissed her off. it was a lie & betty found it astoundingly disrespectful to both her & to jimi); so their union, though creative, didn't last.
enigmatic to the end (ms davis laid low between 1975 & 2009), betty was the subject of a documentary ('they say i'm different', 2017). she died a bit of a human puzzle just this past february.
#mastoArt #funk #musique #bettyDavis #illustration
portrait illustration of funk musician, betty davis, by kat himmel
#art #mastoart #musique #illustration #funk #otd #bettyDavis

#art/#history:

‘kiss me & you will see how important i am.’

sylvia plath (born #otd in 1932) was the first one to teach me that it’s quite okay not to be okay - & i’m not alone under her pedagogy.
since my first prepubescent brush with ‘the bell jar’, i’ve lived by its imparted wisdom - most especially: ‘if you expect nothing from somebody, you are never disappointed' - a credo for life that's much more optimistic than it first appears to be.
#mastoArt #literature #portraiture #sylviaPlath
portrait illustration of author, sylvia plath, by kat himmel. colours are bright red & blue on a graphic background. portrait illustration of author, sylvia plath, by kat himmel. colours are bright red & black on a plain yellow background.
portrait illustration of author, sylvia plath, by kat himmel. colours are bright red & blue on a custard yellow background. portrait illustration of author, sylvia plath, by kat himmel. colours are bright rust & teal on a graphic background.
#art #mastoart #literature #otd #portraiture #SylviaPlath

#art/#history: if you think potatoes are the best thing going for jersey, let me introduce you to claude cahun, a creative time traveller who was born #otd in 1894 in nantes. she was one of the first members of the association des écrivains & artistes révolutionnaires & joined soon after andre breton’s surrealists, becoming a devout (if criminally overlooked) participant. you may remember claude’s 1936 photograph of sheila legge - the one depicting a woman stood (cont)
#mastoArt #portrait
portrait of artist/writer/photographer/surrealist, claude cahun, by kat himmel. abstract peach & grey background portrait of artist/writer/photographer/surrealist, claude cahun, by kat himmel. abstract cherry & grey chequerboard background
portrait of artist/writer/photographer/surrealist, claude cahun, by kat himmel. abstract pumpkin & grey chequerboard background portrait of artist/writer/photographer/surrealist, claude cahun, by kat himmel. strong blue rectangle background
#art #mastoart #portrait #otd

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