Introduction: Appreciating Pi (not the Edible Variety)

Those who fear rows and rows of numbers, I recommend you to leave. Those who wonder what pi is so fascinating about, I recommend you to join me on this epic journey through pi.

EDIT: After having left this to rot for a few years, I have decided to correct some glaring typos. :D

Step 1: Grab Your Slice of Pi (and Please Don't Eat It 'till We're Done)

Now to get some pi to appreciate. There are a lot of websites offering up to 2 million digits of pi. Don't worry, as we are not going that deep. We are stopping at the 100th digit or so.

Here is a website you can go to get pi :
http://www.eveandersson.com/pi/digits/

Here is a site to search pi digits :
http://www.angio.net/pi/piquery

Here are the 1st hundred decimal digits:

3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

apparently of which (some) I have memorized. In the recent years after not actively revising I have forgotten some off the far end.

Step 2: Getting Started...

Here are the first 20 digits. Don't they look pretty?

3.14159265358979323846

I got a little too carried away and had to remove an extra 8 digits.

Step 3: Warmed Up?

I actually forgot a little something :

pi digits 15 to 25

32384626433 (look at the 1st picture)

Ok, lets carry on...

pi digits 21 to 30

2643383279 (2nd pic)

Step 4: Getting Hungry for More?

the next 20:

50288419716939937510

I decided to show more at one go because there are some patterns spread out here.

Step 5: Feel a Little Twitchy?

pi digits 51-70

58209749445923078164

Is your stomach growling for more?

Step 6: You Are Quite Done...

The last 30 :

062862089986280348253421170679

Whoa! What a big bite!

Step 7: Reflections

What were those for? For fun. Don't take them too seriously. Enjoy life. Takeaway a pi-zza (haha). Sit and eat. Forget all these. You will find it difficult at first.

Then come back to this instructable and repeat. Hopefully this has made your day.

Returning a few years later to look at your own Instructable is always fun :D

Comments

author
itsmanofpopsicle made it! (author)2011-12-24

Just saying, pi is kinda incorrect. It's half of the real constant, 2pi, or tau. Look at tauday.com and see a whole manifesto on it.

Sorry for being such a party pooper. Pi is still cool, but not cool enough.

author
tdawber-mandeno made it! (author)2011-09-06

The string 12345678 occurs at position 186,557,266 counting from the first digit after the decimal point. The 3. is not counted.

The string and surrounding digits:

72269200957811705289 12345678 05029135885957638876

author
frodobot made it! (author)2010-01-15

Its a Palindrome not a Pandrilome :)

author
pudgytaco made it! (author)pudgytaco2011-03-28

thats wat he said palindrome

author
pudgytaco made it! (author)2011-03-16

pi tastes good

author
crocboy made it! (author)2010-03-22

Like my profile picture?   (the rating is 3.14 thats funny!)

author
kidNeutrino made it! (author)2010-03-14

just wishing you a happy π Day

author
toothlesskiller made it! (author)2009-05-13

Is it coincidence that the rating is 3.14? LOL!

author
dark sponge made it! (author)dark sponge2010-03-13

I'm not going to rate it simply so it can stay that way!

author
M4industries made it! (author)M4industries2010-03-10

 OMFGWTFBBQ!

That is hilarious!

author
harley_rly made it! (author)harley_rly2009-11-03

lol!

author
rimes made it! (author)2010-03-11

Hey, Pi is Einstein's Birthday too... Spooky huh?
Happens to be mine too... :-)
I know what I wan't my cake to look like now... Thanks!

author
nutsandbolts_64 made it! (author)nutsandbolts_642010-03-12

 dude, that's my sister's b-day

author
Shredder543 made it! (author)2010-03-11

I love pi =D

author
blahblah86 made it! (author)2010-01-28

memorized pi to 61 decimal plaaces in pre-algebra one day.  i was *really* bored, but i still remember the digits!  the pi song helped.  it's on ytmnd.com or something.

author
Kaiven made it! (author)2007-11-11

this is all i know: 3.14159265358979323846323846264332643383279502884197169399375105820974944592307816406286208998. my momwill give me ten dollars if i remember all one hundred

author
zascecs made it! (author)zascecs2009-04-10

I only memorized 3.1415926535897 ...so far

author
Kaiven made it! (author)Kaiven2009-04-13

hehehe... Still have a ways to go xD 3.14159265358979323846264338327950288419716939937510582097494459230781640862089986280348253421170679. The other comment si posted are wrong. Lol.

author
ditto500 made it! (author)ditto5002009-11-16

i got
3.141592653589793238426433 

author
Kaiven made it! (author)Kaiven2009-03-19

Now I know 3.14159265358979323846264338327950 OMG! I CAN'T RECITE WITH 8TH GRADERS SINGING! :O I will do this later....

author
ironman53 made it! (author)2009-05-01

doh ! i thought it was: 3.14159265441 ! i was wrong so ill start again :) when im on the throne ;)

author
itsmanofpopsicle made it! (author)2008-06-04

YOU KNOW WHAT? LET'S SCREAM AT THE TOP OF OUR VOICES!

author
yourcat made it! (author)yourcat2009-03-10

YOU FROGOT TO USE BOLD!!!!!

author
acm321 made it! (author)acm3212009-03-13

YOU FORGOT TO USE SPELL CHECK!!!!

author
yourcat made it! (author)yourcat2009-03-15

WHO CARES?!?!?!?!?!?!?

On the other hand, could this get any more pointless?

author
zascecs made it! (author)zascecs2009-04-10

I do!!!!

lol, jk

author
itsmanofpopsicle made it! (author)itsmanofpopsicle2009-03-19

'EVERYONE THAT HAS A LIFE CARES!

author
red-king made it! (author)red-king2009-03-20

I HAZ NOT GOT ONE OF THOSE WHAT IS IT?

but in all seriousness... this is a pretty pointless conversation...

author
acm321 made it! (author)acm3212009-03-27

YES, THIS IS VERY POINTLESS!!!!

author
AdrianRobert made it! (author)2009-03-12

Glad to see another pi-head. I memorized PI to 100 decimals in 1976 but never went any further. It's enough to count myself as a pi-head. Adrian

author
shaneomacmcgee made it! (author)shaneomacmcgee2009-03-13

i got it to 37, and i thot *I* knew a lot...

i absolutely commend you dude

author
Swishercutter made it! (author)2009-03-10

"8164" 8 squared is 64 and 16x4=64

author
rippinblaise made it! (author)rippinblaise2009-03-10

good observation in 6th grade i memorized the most digits of pi in my grade and won a banana cream pie i memorized 75 or something im in 8th grade now and i still remember 45 digits

author
yourcat made it! (author)2009-03-10

I've memorized the Fibonacci series through 1597: 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 and powers of two through 262,144: 1 2 4 8 16 32 64 128 256 512 1,024 2,048 4,096 8,192 16,384 32,768 65,536 131,072 262,144

author
trialex made it! (author)2006-12-23

It always amazed me that the theoretical lift that is generated by a flat plate at any angle alpha is

L = 2*pi*alpha

Why 2*pi? where did that come from?

author
CameronSS made it! (author)CameronSS2007-10-31

I'm curious--what is the lift measured in? And is there an equally simple formula for the induced drag of said plate?

author
whatsisface made it! (author)whatsisface2008-07-12

Newtons I think, it's just an upward force.

author
trialex made it! (author)trialex2008-07-13

No, it's a co-efficient, it's non-dimensional

author
samv made it! (author)samv2006-12-23

I'm not really sure what formula you refer to, but your calculating the surface between alpha and zero. 2*Pi (in radians) is actually 360°, so one circle. When you take a circle with radius 1, you measure the arc of 180° degrees, which is 3.1415...

author
trialex made it! (author)trialex2006-12-23

Sorry I was being rhetorical... In aeronautics the first thing that you calculate the lift of is a flat plate, and the coefficient of lift genereated by a flat plate at an angle theta in radians is 2*pi*theta I just always found it amazing that pi works in all these different ways

author
randName made it! (author)2006-12-24

I didn't expect such an overwhelming response.

I may do e or phi soon...I may even try i (haha).

I chose pi because I have memorised 110+ digits of it.

author
itsmanofpopsicle made it! (author)itsmanofpopsicle2008-03-23

curious question: how old are you? it takes a really good memory to do that

author
randName made it! (author)randName2008-04-29

Currently 14. The 100 digits was done at around 12.

author
ojochris made it! (author)ojochris2008-04-28

isn't phi like 1.58 or something?

author
ojochris made it! (author)ojochris2008-04-28

P.S. I won a memory contest with pi... 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

author
zachninme made it! (author)zachninme2006-12-24

phi = square root of 5 - 0.5 :-)

Do e, its the only one that you can't do on a basic scientific calculator :-)

author
PurplePeople made it! (author)PurplePeople2006-12-27

I was under the impression that you press: 1, INV, Ln

author
Ethelon made it! (author)2008-03-25

o cool, we just had pi day a few days ago, umm i wasnt plannign on entering the contest, but i did a few, just by listening to a bunch of people saying em, so here goes 3.14159265358979323846264338 i think i had a lil more but i guess i forgot pi PIE/PI FTW!

author
binnie made it! (author)2007-02-04

Are you like one of those freaks that can actually remeber past 3.14159?

author
Kaiven made it! (author)Kaiven2007-11-11

i'm not a freak, nut i know this far: 3.14159265358979323846323846264332643383279502884197169399375105820974944592307816406286208998. not sure how many digiits it is though

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