Wednesday, May 8, 2013 Sunday, May 5, 2013
The Only Photograph of Einstein’s Derivation of the Mass-Energy Equivalence? (via ptak science books)

I came across an article while researching a work by H.P. Robertson—Lectures on Relativity (Princeton 1935)—and it is much more interesting than what I was actually looking for.  It seems that in the history of Einstein working his famous E = mc2 on blackboards around the world that there are no surviving pictures of the man and the chalk and the equation…

In their article “Einstein’s 1934 Two-Blackboard Derivation of Energy-Mass Equivalence” (found in the American Journal of Physics, 75 (11), November 2007, pp 978-983) David Topper and Dwight Vincent of the University of Winnipeg sort it out and reproduce a not-sharp (but essential!) halftone newspaper file photo clipping showing Einstein doing just this, using two blackboards for the derivation of the equivalence of mass and energy during a public lecture in Pittsburgh in 1934.

The Only Photograph of Einstein’s Derivation of the Mass-Energy Equivalence? (via ptak science books)

I came across an article while researching a work by H.P. Robertson—Lectures on Relativity (Princeton 1935)—and it is much more interesting than what I was actually looking for. It seems that in the history of Einstein working his famous E = mc2 on blackboards around the world that there are no surviving pictures of the man and the chalk and the equation…

In their article “Einstein’s 1934 Two-Blackboard Derivation of Energy-Mass Equivalence” (found in the American Journal of Physics, 75 (11), November 2007, pp 978-983) David Topper and Dwight Vincent of the University of Winnipeg sort it out and reproduce a not-sharp (but essential!) halftone newspaper file photo clipping showing Einstein doing just this, using two blackboards for the derivation of the equivalence of mass and energy during a public lecture in Pittsburgh in 1934.

ENIAC, the first fully electronic digital computer, 1946 (image courtesy Millersville University via Incredible Pictures of Early Science Labs  at io9)

ENIAC, the first fully electronic digital computer, 1946 (image courtesy Millersville University via Incredible Pictures of Early Science Labs at io9)

Thursday, May 2, 2013 Tuesday, April 30, 2013
onlyoldphotography:

Yale Joel: American travelers building a sand replica of France’s medieval abbey at Mont-Saint-Michel in the background, July 1948

onlyoldphotography:

Yale Joel: American travelers building a sand replica of France’s medieval abbey at Mont-Saint-Michel in the background, July 1948

Sunday, April 7, 2013
romythe:

mugenstyle:

eccecorinna:

wrathofprawn:

for those not in the know, night witches were russian lady bombers who bombed the shit out of german lines in WW2. Thing is though, they had the oldest, noisiest, crappest planes in the entire world. The engines used to conk out halfway through their missions, so they had to climb out on the wings mid flight to restart the props. the planes were also so noisy that to stop germans from hearing them combing and starting up their anti aircraft guns, they’d climb up to a certain height, coast down to german positions, drop their bombs, restart their engines in midair, and get the fuck out of dodge.
their leader flew over 200 missions and was never captured.

how the fuck is this not taught in every single history class ever



Holy fuck
They deserve their name

fantastic

romythe:

mugenstyle:

eccecorinna:

wrathofprawn:

for those not in the know, night witches were russian lady bombers who bombed the shit out of german lines in WW2. Thing is though, they had the oldest, noisiest, crappest planes in the entire world. The engines used to conk out halfway through their missions, so they had to climb out on the wings mid flight to restart the props. the planes were also so noisy that to stop germans from hearing them combing and starting up their anti aircraft guns, they’d climb up to a certain height, coast down to german positions, drop their bombs, restart their engines in midair, and get the fuck out of dodge.

their leader flew over 200 missions and was never captured.

how the fuck is this not taught in every single history class ever

Holy fuck

They deserve their name

fantastic

(Source: sovietico)

Friday, March 22, 2013
collectivehistory:

A young passenger asks a station attendant for directions. Bristol Railway Station, England, 1936, by George W. Hales

commute time

collectivehistory:

A young passenger asks a station attendant for directions. Bristol Railway Station, England, 1936, by George W. Hales

commute time

Saturday, March 16, 2013
I bought a necklace today made from an old stamp at one of my favorite shops -  Joanne Rossman “Purveyour of the unnecessary and the irresistible” (if you’re ever near Roslindale, be sure to stop by).  It caught my fancy; I liked the colors and the couple. Of course, being me, I later felt I wanted to know where it came from and what it might mean. 

After a bit of work I found it’s a  stamp of the coronation of King Haakon and Queen Maud.

A bit more digging and I found: Queen Maud: “She was a high-spirited child, a quality that earned her the nickname Harry…  She supported charitable causes, particularly those associated with children and animals, and gave encouragement to musicians and artists…She supported the feminist Katti Anker Møller’s home for unwed mothers (1906), which was regarded as radical”

Haakon VII of Norway:  In Norway, Haakon is regarded as one of the greatest Norwegians of the twentieth century and is particularly revered for his courage during the German invasion—he threatened abdication if the government cooperated with the invading Germans—and for his leadership and preservation of Norwegian unity during the Nazi occupation… During Norway’s five years under German control, many Norwegians surreptitiously wore clothing or jewelry made from coins bearing Haakon’s “H7” monogram as symbols of resistance to the German occupation and of solidarity with their exiled king and government.

I will wear it with pleasure
.

I bought a necklace today made from an old stamp at one of my favorite shops - Joanne Rossman “Purveyour of the unnecessary and the irresistible” (if you’re ever near Roslindale, be sure to stop by). It caught my fancy; I liked the colors and the couple. Of course, being me, I later felt I wanted to know where it came from and what it might mean.

After a bit of work I found it’s a stamp of the coronation of King Haakon and Queen Maud.

A bit more digging and I found:
Queen Maud:

“She was a high-spirited child, a quality that earned her the nickname Harry… She supported charitable causes, particularly those associated with children and animals, and gave encouragement to musicians and artists…She supported the feminist Katti Anker Møller’s home for unwed mothers (1906), which was regarded as radical”

Haakon VII of Norway:

In Norway, Haakon is regarded as one of the greatest Norwegians of the twentieth century and is particularly revered for his courage during the German invasion—he threatened abdication if the government cooperated with the invading Germans—and for his leadership and preservation of Norwegian unity during the Nazi occupation… During Norway’s five years under German control, many Norwegians surreptitiously wore clothing or jewelry made from coins bearing Haakon’s “H7” monogram as symbols of resistance to the German occupation and of solidarity with their exiled king and government.

I will wear it with pleasure .

Friday, March 8, 2013
lauramcphee:

Night At The Circus, 1949 (Nina Leen) via tamburina

lauramcphee:

Night At The Circus, 1949 (Nina Leen) via tamburina

collectivehistory:

“Pam” ca. 1944
This ordinary looking snapshot was taken and planted as part of a complex WWII intelligence plan known as Operation Mincemeat.
The intention was that this photograph would make other documents secreted with it seem more authentic. These documents, passed on to German agents after they were found on a body washed up on the coast of Spain (planted by British intelligence) suggested that the Allies were not planning an invasion of southern Europe via Sicily. This led to a weakening of German defense of Sicily which assisted the eventual Allied attack. (The National Archives UK)

collectivehistory:

“Pam” ca. 1944

This ordinary looking snapshot was taken and planted as part of a complex WWII intelligence plan known as Operation Mincemeat.

The intention was that this photograph would make other documents secreted with it seem more authentic. These documents, passed on to German agents after they were found on a body washed up on the coast of Spain (planted by British intelligence) suggested that the Allies were not planning an invasion of southern Europe via Sicily. This led to a weakening of German defense of Sicily which assisted the eventual Allied attack. (The National Archives UK)

Tuesday, February 19, 2013
collectivehistory:

Marilyn Monroe performing for troops stationed in Korea, February 1954 (Source) 

collectivehistory:

Marilyn Monroe performing for troops stationed in Korea, February 1954 (Source

Monday, January 21, 2013
Machine arithmétique (calculating machine) de Grillet, 1678 by Musée des Arts et Métiers, Paris by my awesome friend maxf

Machine arithmétique (calculating machine) de Grillet, 1678 by Musée des Arts et Métiers, Paris by my awesome friend maxf

Friday, November 30, 2012

This is the oldest piece of music known to humankind. It’s engraved in cuneiform on a tablet from 1400 BC. It was a hymn to their goddess Nikkal.

I showed this to Eric, noting that I could believe this came from Iron and Wine or Andrew Bird. I am awed at this this path of humanity, music, history, beauty - from cuneiform to the Web. The world is an astoundingly wonderful place.

(Source: missjessicasmith)

Saturday, November 24, 2012
Very Gradual Change We Can Believe In, Darwin (via zazzle)

Today in 1859, Darwin published On the Origin of the Species

There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.

Very Gradual Change We Can Believe In, Darwin (via zazzle)

Today in 1859, Darwin published On the Origin of the Species

There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.