Root 2 - Numberphile

The square root of two is a fascinating number with a long and sordid history. It also forms the basis of most office paper, such as A4, A3, etc.
More links & stuff in full description below ↓↓↓

This video features Professor Roger Bowley and Dr James Grime.

NUMBERPHILE

Videos by Brady Haran

[razwanabdullah]

i took my root beer and put it in a square cup...now its just beer 

[DragongodZenos]

why do i do this to myself. late night math videos on youtube when i cant even do basic math

[ConsolePit]

I can't stop watching these videos. I barely understand anything going on, but I think I've learned what a number is, so I'm pretty excited

[willsheridan]

At this point in time, the number of views this video has is 1.414 million (root 2 x You have no idea how long I waited for this moment.

[Yizak]

The overwhelming irony is that if you hear the name Pythagorus, you think of his Theorem, which gives rise to irrational numbers - the very thing he hated!

[BonelessEar]

dont urine towards the wind.. solar wind applies too!

[Phobero]

5:44 - guys, guys, Bruno Giordano was a striker for Napoli football team in the eighties.
Philosoper guy is Giordano Bruno.

[AmonAmarthFan]

I love re-watching ancient primal numberphile videos and thinking about how when these videos were made, they likely had no idea how popular their channel would end up becoming over the next decade

[LLHLMHfilms]

I think that talking about the square root of 2 is pretty irrational.

[vpfan]

"The square root of 2 is about 1.41 something or other."
Nice.

[nashvillain]

*4:51** "...I can't begin to tell you how much they disliked this."*
**Proceeds to tell us how much they disliked it.*

[wheresmyoldaccount]

99/70 = 1.4142857142857...

(99/70)² = 2.000204081632653

99/70 is an excellent approximation of √2

[lenonel]

I love how they always talk like they're uncovering some massive government conspiracy

[davidsotomayor]

@5:20 I was lucky enough to have an awesome professor for complex numbers, he was my AC circuits professor. Everyone in that class was great with complex numbers which worked out well in other math classes. Other students used to hate it when we had to do complex/imaginary numbers.

[endermage]

Nobody:


The bloke who added a radial blur on the thumbnail: *You have entered the comedy area*

[KeithDart]

Cool, I didn't know that about the A series paper. Now I'm a fan of the A series Paper (alas, something we don't use in the USA). 

[thecsslife]

The proof was very clearly demonstrated, thank you!

[HappyBeezerStudios]

root 2 is indeed one of my favorite numbers. It comes more up in daily life than I thought.

[albrix]

I'll never ever pee facing the sun again. Thank you, numberphile.

[mydemon]

A4 "pretty standard in most of the world"

*Cries in freedom paper*