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Quote from ACCAkut :

Want.

My maths teacher decided to put one like this on the wall. Now I don't know how much time left until lesson ends

Can someone explain me 1, 3, 8 and 9?

1: Legendre's Constant.
3: I think it's unicode or something..
8: It's binary.. 8 (4) (2) (1)
9: 21 in base 4 is 9 in base 10 (decimal).

Quote from Flame CZE :

Can someone explain me 1, 3, 8 and 9?

Quote from http://www.uncommongoods.com/product/geek-wrist-watch :

Cheat Sheet (included with each clock):
12 - a radical
1 - Legendre's constant is a mathematical constant occurring in a formula conjectured by Adrien-Marie Legendre to capture the asymptotic behavior of the prime-counting function. Its value is now known to be exactly 1.
2 - A joke in the math world: An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says, "You're all idiots," and pours two beers.
3 - A unicode character XML "numeric character reference."
4 - Modular arithmetic, also known as clock arithmetic, is a system of arithmetic for integers, where numbers "wrap around" after they reach a certain value. The modular multiplicative inverse of 2 (mod 7) is the integer /a/ such that 2*/a/ is congruent to 1 modulo 7.
5 - The Golden Mean...reworked a little.
6 - Three factorial (3*2*1=6)
7 - A repeating decimal that is proven to be exactly equal to 7 with Cauchy's Convergence Test.
8 - Graphical representation of binary code.
9 - An example of a base-4 number, which uses the digits 0, 1, 2 and 3 to represent any real number.
10 - A Binomial Coefficient, also known as the choose function. 5 choose 2 is equal to 5! divided by (2!*(5-2)!)
11 A hexadecimal, or base-16, number.

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Got the ones I guessed right.

Quote from TypeRacing :

Coyote

Yes, that's a fan blowing a sail It actually works.

Also post 1000. resent:

And thats how you destroy the man folks

Quote from Chupacabras84 :

And thats how you destroy the man folks

Hahahaha

Quote from RasmusL :

Yes, that's a fan blowing a sail It actually works.

Also post 1000. resent:

I call shennanigans.

Troll science.

Quote from Crashgate3 :

I call shennanigans.

Not.

They explained in the episode why it works.

Quote from Krane :

Not.

They explained in the episode why it works.

which episode is this?

Ironic..

Quote from tikshow :

which episode is this?

s09e06

Quote from Bose321 :

s09e06

thx!

Quote from Krane :

Not.

They explained in the episode why it works.

Can you explain it for people who don't have the time to download and watch an entire episode?

http://images02.bebzol.com/dat ... e0c9a7e44adc1102ad85b.jpg

http://images03.bebzol.com/data/201105/2152.gif

Quote from Crashgate3 :

Can you explain it for people who don't have the time to download and watch an entire episode?

Yes. The forces don't balance out, as the sail also redirects the air back towards the fan, giving a net force in the direction the fan is blowing.

This exact mechanism is applied in jet engines. It's how (some) commercial airlines slow down, by putting a metal shield behind the jet engine redirecting the exhaust forward.

I see - that actually makes perfect sense!


It's as if you put a bent tube behind the fan, which directed the air around 180 degees (which would push the cart along) only much less efficient as most of the air leaks around the side.