Do you know Pi?
 

Check out this Japanese man who makes recites pi to 100,000 digits, from memory. It only took him 16 hours to do so...

Re: Do you know Pi?
 

Where's the video? ;)

Re: Do you know Pi?
 

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

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

Re: Do you know Pi?
 

I can recite Pi in it's entirety.

22/7

WHAT NOW?

Re: Do you know Pi?
 

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.

Re: Do you know Pi?
 

You're off by 0.001 ;)

Re: Do you know Pi?
 

WE are the PI-oneers!

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

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.

Re: Do you know Pi?
 

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

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

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

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:

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

*ahem*
link

Re: Do you know Pi?
 

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?

Re: Do you know Pi?
 

If so it's in my area (STL) ... trying now ... nope.

Guess 159 is not a valid prefix.

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

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.

Re: Do you know Pi?
 

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

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

Re: Do you know Pi?
 

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?

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

Yes, you can search through the first 200 million digits of Pi here.

Re: Do you know Pi?
 

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

OOPS, I've said too much!

Re: Do you know Pi?
 

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

I win ;)


Now, who can tell me Phi?

Re: Do you know Pi?
 

.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...

Re: Do you know Pi?
 

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" ?

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

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

Re: Do you know Pi?
 

Fum is solving math problems, as in "I love Math! It is a lot of Fum!"

Re: Do you know Pi?
 

Math is Fun!

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