Do you know Pi? [Archive]

David Kelly

04-10-2006, 12:48

Check out this Japanese man (http://www.foxnews.com/story/0,2933,217765,00.html) who makes recites pi to 100,000 digits, from memory. It only took him 16 hours to do so...

Jeff Rodriguez

04-10-2006, 12:50

Where's the video? ;)

KenWittlief

04-10-2006, 16:06

"PI IS EXACTLY THREE!" Professor Clavin (The Simpsons)

I can recite 100,000 better things he could have done with his time! [°i°]

Dan Petrovic

04-10-2006, 17:24

I can recite Pi in it's entirety.

22/7

WHAT NOW?

Richard Wallace

04-10-2006, 17:46

Cory

04-10-2006, 17:52

I can recite Pi in it's entirety.

22/7

WHAT NOW?

You're off by 0.001 ;)

DonRotolo

04-10-2006, 22:46

WE are the PI-oneers!

sanddrag

04-10-2006, 22:57

I've memorized the first 10 digits and that's all I ever plan to do.

mgreenley

05-10-2006, 00:38

I have to say; that's a pretty impressive feat...
...but think of the poor folks that had to sit there checking it for the world record...

And in the spirit of accuracy,
22/7 is close,
355/113 is very close,
but why not just remember the *equally* as easy formula,
4( (4arctan(1/5)) - (arctan(1/239)) ) ? ;)

On second thought, the "355/113"'s get my vote.

KenWittlief

05-10-2006, 09:37

pi = 3.1415926...

355/113 = 3.1415929... This easily remembered fraction differs from the correct value of pi by less than 90 parts per billion; that's close enough for any engineering activity I've ever been directly involved with.

but you still have to memorize 6 digits to get the fraction, and then you have to divide it out

to memorize to 90 parts per billion you only have to memorize 8 digits!

I have memorized Pi - I memorized the symbol - its the key on my calculator that looks like two TT 's run together, and thats all I need to know!

BTW, Akira Haraguchi has stepped over the line and caused an unforeseeable amount of grief for millions of men all over the world. I can hear it already

IF 60 year old Akira Haraguchi can remember Pi to 100,000 digits then why cant you remember my FOUR DIGIT BIRTHDAY!

Graham Donaldson

05-10-2006, 11:45

Yeah... I read about this in the news. My math teacher says that if we memorize like 50 or 100 he'll give us extra credit...what about 100,000? Hmm...

The Canuck

artdutra04

05-10-2006, 14:39

Yeah... I read about this in the news. My math teacher says that if we memorize like 50 or 100 he'll give us extra credit...what about 100,000? Hmm...I had the same extra credit deal in my geometry class four years ago, where you can get extra credit if you memorize pi to 50 decimal spots. It's a shame all I can remember is 3.1415926535897932384626433832795028841 off the top of my head. :yikes:

JaneYoung

05-10-2006, 14:49

I had the same extra credit deal in my geometry class four years ago, where you can get extra credit if you memorize pi to 50 decimal spots. It's a shame all I can remember is 3.1415926535897932384626433832795028841 off the top of my head. :yikes:
I think the box that you Pi people would think outside of has totally decomposed.

anna~marie

05-10-2006, 14:56

*ahem*
link (http://pi.ytmnd.com/)

KenWittlief

05-10-2006, 15:23

isnt there a program that lets you search for stuff like your birth day, phone number, or SSI number in PI, to see how far it you have to go to find the 1st instance of it?

now I wondering if (314) 159-2653 is someones phone number?

Richard Wallace

05-10-2006, 15:29

smurfgirl

05-10-2006, 18:40

I had the same extra credit deal in my geometry class four years ago, where you can get extra credit if you memorize pi to 50 decimal spots. It's a shame all I can remember is 3.1415926535897932384626433832795028841 off the top of my head. :yikes:

When I got really bored in math class back in 7th grade I memorised 100 digits. Wish I got extra credit for that!

Graham Donaldson

05-10-2006, 22:17

I think the box that you Pi people would think outside of has totally decomposed.

Ha ha ha... yeah, if you have enough time (or willpower, or focus) to memorize 25+ digits of Pi, the box doesn't exist for you to think outside of. :D

The Canuck

Tyler 783

06-10-2006, 03:55

My friends phone number is (excluding area code so you don't all call him) 223-1419. It's realy funny because any time any of us need to call anyone it's like... hmm i can't remeber anyones number. Wait a sec call dave everyone knows daves number it's 22 pi.

David Brinza

06-10-2006, 09:08

There was an attempt to legislate the value of Pi in Indiana in 1897. Bill #246 would have legally established Pi to be equal to 3.2! The Bill, was introduced by Edwin Goodwin, M.D., with a provision that the State of Indiana could use his copyrighted solution free of charge, but outsiders would have to pay him a royalty! With the backing of the Indiana House Committee on Education, the Bill passed the Indiana House 67-0. Fortunately, a math professor from Purdue (Professor Waldo) was able to convince the State Senators that the bill should be killed. Further consideration of the Bill was postponed indefinitely, and it never appeared in the Indiana Assembly again.

Full details (with a link to the text of the Bill) can be found at: Indiana Pi (http://www.agecon.purdue.edu/crd/Localgov/Second%20Level%20pages/Indiana_Pi_Story.htm)

P.S. Try working through the "proof" offered in Section 1 and 2 of the bill. It's convoluted and (of course) wrong...

KenWittlief

06-10-2006, 09:17

There was an attempt to legislate the value of Pi in Indiana in 1897. Bill #246 would have legally established Pi to be equal to 3.2! ...

1897 was the beginnings of the industrial revolution. It would have been interesting if every circular object made in Indiana did not match measurements from the rest of the world, for example, if 1" diameter bearings were actually 1.05" diameter, because they had to make the circumference match the legal definition of Pi in that state?

And how many universities would there be in the state, if they were required to teach incorrect mathematics?

David Brinza

06-10-2006, 09:31

It would have been interesting if every circular object made in Indiana did not match measurements from the rest of the world, for example, if 1" diameter bearings were actually 1.05" diameter, because they had to make the circumference match the legal definition of Pi in that state?

Don't those AndyMark traction wheels seem a little oversized? Could it be???

MattD

08-10-2006, 00:05

isnt there a program that lets you search for stuff like your birth day, phone number, or SSI number in PI, to see how far it you have to go to find the 1st instance of it?
Yes, you can search through the first 200 million digits of Pi here (http://www.angio.net/pi/piquery).

Michael Hill

08-10-2006, 02:33

sqrt( 6 * sum( 1/(n^2), n, 1, infinity) )

OOPS, I've said too much!

Lil' Lavery

10-10-2006, 20:09

Pi=C/(2r)
or
Pi=A/(r^2)

I win ;)

Now, who can tell me Phi?

mgreenley

10-10-2006, 21:28

Richard Wallace

10-10-2006, 22:34

Now, who can tell me Phi?.5(1+(5)^.5) = phi

...But I prefer to truncate the .618... part so I can count, phi, e, pi as 1, 2, 3, respectively..

...come to think of it, those minor truncations and roundings I've made may be the source of most of my problems in math this semester...Phi is the larger solution of x - 1 = 1/x, often called the Golden Mean.

So is it pronounced "fee" or "fie" ?

Next question: who can tell me "fo" ? (Too easy. It's the integer successor of three.)

Then who can tell me "fum" ?

verbal abuse166

10-10-2006, 22:43

still I'd have to say I like pi more (probably just because once i was board and memorized 42 digits of it) as well as board I'm too lazy to chant them off, but pi was like my symbol in my old school, so i never forgot the digits because everyone always had me recite them

KenWittlief

10-10-2006, 22:45

given how we memorize everything else, is there a PI song ?

Cynette

11-10-2006, 11:39

Then who can tell me "fum" ?Fum is solving math problems, as in "I love Math! It is a lot of Fum!"

KenWittlief

11-10-2006, 11:51

Math is Fun!

http://explodingdog.com/aug3/mathisfun.html