Pi - Sixty Symbols

It's more of a maths symbol, but crucial to physics too... So by popular demand, we've had a look at pi (but in Professor Eaves' unique way). More at http://www.sixtysymbols.com/

Category:

Science & Technology

Tags:

• pi

[madzyadzy07]

Adele called her first albums 19 & 21 because they are numbers that have special importance to her life

Her follow up 3.1415926535897932384626433832­7950288419716939937510 is due out in the summer.

[01000110I01010101]

@mdiem even 3.1415 is more accurate than 22/7

[Nadeeja94]

When we were introduced to Pi at school, we had a hard time containing our laughter. Because Pi means d**k in my mother tongue (Sinhalese).

[MultiPaulinator]

@Arghira found it:

The long-hand version of this series is actually:

2/1x2/3x4/3x4/5x6/5....

So to get an approximation out of the series, you would need to use one less number in the denominator than you use in the numerator:

3x3x5x5x7 =1575

2304/1575 yields 1.462857.

Looks like this series needs a large number of terms before it starts converging.

[Arghira]

2x2x4x4x6x6=2304

3x3x5x5x7x7=11025

2304/11025=0.2089796

pi=3.141592653589

3.141592653589/2=1.57079632679­45

see my confusion??? 0.2089796 it different form 1.5707963267945 Where is my mistake?

[RikkTheGaijin]

I don't understand anything of this.

[F35Pilots]

The total area under 1/(x^2+1) is pi because the integral of 1/(x^2+1) is tan^-1(x)+C

[BlueCosmology]

@ColdHeartedMan86 "If you're dealing with radians."

If you mention pi and don't mention units you are always dealing with radians as radians are dimensionless, and are defined by pi.