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The History of Non-Euclidian Geometry - The Great Quest - Extra History - #2
🕑 Added 2018-06-01 17:31:00 +0000 UTC For hundreds of years, Euclid's geometry disappeared with the fall of the Roman Empire. But in Constantinople, Islamic mathematicians, including Al-Khwarizmi (who gave us the word "algebra") worked long and hard on proving the Fifth Postulate.
Comments
Hao Sun
why was putting irrational numbers on the rational number line so absurd to the greeks? imo \pi is a bad choice as an example of irrational number as it was not known to be irrational at the time, btw the greeks did know how to construct 2^0.5 and move it "onto the number line" through their straightedge and compass constructions so why was this concept so radical?
Extra History
Not an art error, but a rendering error during editing!
Bill Lemmond
You make math fun! :D I did almost all my calculus homework during super hero tabletop role-playing sessions, and had over 100% average for both terms, because I was having fun. You really are helping. :)
Amy Reynolds
I LOVED that call-back to the Crusade episodes! I'm glad I'm not the only person who caught it. ;)
Marc Langlois
Isn't that the exact opposite of what they said?
Marc Langlois
Back then the Atlantic was dry land and Great Britain was a sea. One of thoses forgotten facts of history brought to you by Extra History.
HiddenHistory
Around 1:30 , there is an image of a map which has the region of earth to the far left as shaded in green. Is there a reason for this, or was it just a mapping error?
Extra History
there will be 5!
Darren Loo
If they had thought me how to do quadratic in Euclidian terms, I might not have flunked math.
Rossum
Pi.
schuyler
how many ep"s of non euclidean geometry will there be ?
Sean Sarff
While you’re ransacking their library you accidentally grab it instead of the sacred texts you really wanted.
Justin M.
How do you accidentally steal something from the Vatican archives?
Jon
If they haven't, they should!
Jon
Minor nitpicks: At 2:13, -pi/2 is displayed on the number line between +1 and +2 (approx +1.3). It should be approx -1.6. At 6:55, the black sea is coloured as land and crimea is coloured as water. Otherwise, good stuff :-)
Ethel_Mezezi
Lol. I see it, too. I guess that Britannia really does rule the waves.
Sean Sarff
Why haven’t you guys made a shirt for “Why let a little blank get in the way of a crusade?”
Kallikrates
Why is the Atlantic west of Gibraltar dark green at 1:30? And Britain ocean..
Sientir
This continues to be super engaging, and the end of the episode continues to come far sooner than I want it to. So, good job, especially to the script writer!
Martin Verran
With Regard to the last Episode I'd always Assumed that the most Influential Book after the Bible [in Terms of Impact on Human History] had been the Communist Manifesto by Karl Marx but that's probably my Political Bias talking.
