How many decimal places in Pi do you know?

[igor_kavinski]

oh yeah im 10

Hey, who let you on the internet unsupervised???

 

[dave_the_nerd]

Nine. Because that's how many decimals my calculator showed when I was a kid who randomly decided to memorize stuff like that.

 

[pmv]

How I like a drink, alcoholic of course, after the heavy chapters involving quantum mechanics.
3 . 1 4 1 5 9 2 6 5 3 5 8 9 7 9

 

[SteveGrabowski]

pi = e = 3
sin x = x
e = 2

it's the fundamental theorem of engineering

 

[SteveGrabowski]

How I like a drink, alcoholic of course, after the heavy chapters involving quantum mechanics.
3 . 1 4 1 5 9 2 6 5 3 5 8 9 7 9

Griffiths or Shankar?

 

[igor_kavinski]

it's the fundamental theorem of engineering

This says that there isn't one so he proposes one: https://ivymike.dev/the-fundamental-theorem-of-engineering-everythings-a-tradeoff.html

 

[amdhunter]

3.2

 

[Fenixgoon]

3.14159

 

[WelshBloke]

Three and a bit.

 

[SKORPI0]

3.141592 6535897932384626

6535 8979 3238 4626

 

[IronWing]

The value of pi changes with the curvature of space so there is no point in memorizing the value for one location. As long as I have a pop can and a string, I can measure the local value anywhere.

 

[JTsyo]

Going further, if you used 40 digits of pi, Rayman says, you could calculate the circumference of the entire visible universe — an area with the radius of about 46 billion light-years — "to an accuracy equal to the diameter of a hydrogen atom."

 

[sandorski]

2, more is too Nerdy for me.

 

[Paperdoc]

Neutralizer beat me by 2. So that's by 53 parts in just over 3 billion, or 0.053 parts per million. For nearly all practical purposes, that error is unimportant (so are all my remembered digits!) because nobody can measure anything that precisely.

Cute trick I was told by am electronics tech decades ago as a way to get Pi without memorizing. Take the first three odd numbers and write them down in pairs to make a six-digit string: 113355. Break that into two halves and divide one into the other - easy on any calculator today.

355 / 113 = 3.141592920353982.

It's wrong by 2.7 in the 8th / 9th digits, or 0.085 parts per million. Good enough for most work!

 

[JTsyo]

[deleted]

 

[Ken g6]

3.1415926535897932384626433832

 

[brianmanahan]

3.2

 

[brianmanahan]

3.141592653589793238462643383279502884197169399375105820974944592307816406286
*akward silence*
oh yeah im 10

 

[dainthomas]

I usually remember the first five.

You only need 39 to calculate the circumference of the universe to the width of a hydrogen atom, so anything more than that is superfluous.

 

[Ajay]

3.1415926535897932. It was the limit that fit into an FP variable on the TRS 80 Model III in HS. I printed it out at school and posted it on my bedroom wall to memorize it. My brother had a poster of Farrah Fawcett in a bikini. I think he was actually smarter than I was.

 

[Muse]

3.1415926...

I used to be able to rattle off a lot more.

 

[Fenixgoon]

3.2

purge the heretic

 

[brianmanahan]

purge the heretic

send him to indiana where he belongs