What is Digg?138 Comments
- jstohler, on 10/12/2007, -14/+150Step 1: Warm pi in oven
Step 2: Pull down pants - trghpy, on 10/12/2007, -4/+81Q: What do you get if you divide the circumference of a jack-o-lantern by its diameter?
A: Pumpkin pi.
Q: What do you get when you take a bovine and divide its circumference by its diameter?
A: Cow pi.
Q: What do you get when you take green cheese and divide its circumference by its diameter?
A: Moon pi.
Q:What do you get when you take a native Alaskan and divide its circumference by its diameter?
A: Eskimo pi.
Q:What do you get when you take the sun and divide its circumference by its diameter?
A: Pi in the sky.
Q: What do you get if you divide the circumference of a bowl of ice cream by its diameter?
A: Pi a'la mode. - inactive, on 10/12/2007, -21/+903: ???
4: PROFIT - doctorcaligari, on 10/12/2007, -0/+45Cross my heart and hope to die!
Here’s the digits that make pi!
3.1415926535897932384....
I have had this Simpsons reference in my head all day. - TenebrousX, on 10/12/2007, -0/+43I like wikipedia's pi animation better:
http://en.wikipedia.org/wiki/Image:Pi-unrolled-720.gif - Akaji, on 10/12/2007, -7/+49There are only two kinds of people on Digg - geeks and wannabes. Guess which you are.
- laxmaniac3773, on 10/12/2007, -1/+37i wish we did that in calc today. or anyday. for that matter. stupid integrals
- banthis, on 10/12/2007, -0/+34i think pi is a female, because pi its irrational, but thats just me....
- DontEatTheFish, on 10/12/2007, -1/+23my math teacher made us celebrate pi day, we ate pie, did a competition to see who could memorize the longest digits of pi(winner was someone with 96 digits!!, i thought i would win with 10) we also did a quiz on pi related stuff. this was in a calculus class by the way.
- SkittlesUSA, on 10/12/2007, -0/+16My teacher made us make Pi t-shirts for extra credit....
I photoshopped a square pie and underneath put 'Pi Are Squared.'
And on the back I put "Please don't beat me up, I made this for extra credit." - CanadianAviator, on 10/12/2007, -0/+16That would make the probability greater than one. Nice try.
- KibibyteBrain, on 10/12/2007, -2/+18Bleh. When you become an Electrical Engineer, you really don't see anything special about Pi anymore as you use it so much. If I get something Pi in a calculation, its pretty much normal. In fact, you probably messed up when you don't have a Pi or an e or a sqrt(2) somewhere in your answers for analog design...
- archiecstll, on 10/12/2007, -0/+14I feel sorry for anyone that has dial-up and trying to post a comment after that...
- zoid, on 10/12/2007, -0/+14you win....
- trogdor282, on 10/12/2007, -1/+12You forgot spammers and 9/11 kooks!
- nepawoods, on 10/12/2007, -3/+14yeah, for sufficiently large values of pi. what's your point?
- superal1394, on 10/12/2007, -1/+11The world ends March 14th, 2015 at 9:26:54 AM
- inactive, on 10/12/2007, -0/+10http://pi.ytmnd.com/
- nipterink, on 10/12/2007, -0/+10@foovo: i'm surprised that, being an engineer, you are not aware that virtually every calculator has a pi button nowadays.
- 8177, on 10/12/2007, -0/+9Umm, you made a mistake on line 84 digit 12 from the left, that should be a 2.
- imikedaman, on 10/12/2007, -1/+10@0firefly0: unfamiliar with the concept of a joke?
http://en.wikipedia.org/wiki/Sufficiently_large - kaybee5225, on 10/12/2007, -0/+9Happy Pi Day!!
- Lennalf, on 10/12/2007, -0/+8Pi day is official over already (in my time zone) and nobody has mentioned Euler's Idenitity!?
I'm horribly disappointed. Well, here it is:
e ^ (pi * i) = -1
where
e = the base of the natural logarithm
i = the square root of -1, the unit of imaginary numbers
pi = well... duh
It's one of the most beautiful equations in mathematics. - basket548, on 10/12/2007, -0/+8Isn't Euler's typically written as
e^(pi * i) +1 = 0
in order to get both zero and one into the equation, thereby making it that much more elegant? - assum09, on 10/12/2007, -1/+8I love random Pi references and Jokes (talking about comments not story)
- Ocelot13, on 10/12/2007, -0/+7we had pie, and finished a test. tomorrow we start integration...
- kenz0r, on 10/12/2007, -3/+9did you think that was like a funny coincidence or something?
- BJ_Blaskowitz, on 10/12/2007, -0/+6I think what the original poster meant was (according to the animation) that the probability is 2/pi which is < 1, not pi/2
- mcnappy, on 10/12/2007, -1/+7Copy and Paste from calc.exe... FTW!
- grumpyrain, on 10/12/2007, -0/+6It's Pi, and there are several methods
This one is pretty simple:
Pi = 4 - (4/3) + (4/5) - (4/7) + (4/9) - (4/11) + (4/13) ....... and on for infinity
( http://en.wikipedia.org/wiki/Leibniz_formula_for_pi )
Of course it is horrendously slow to converge, there are much more efficient algorithms, but this one is nice and easy to do yourself.
I don't understand the obsession with calculating a bizillion digits. You need surprisingly few digits to accurately calculate the circumference of a planet to the closest atom (assuming you have a very accurate measurement of the radius).. - CedanticPunt, on 10/12/2007, -1/+7"The world ends March 14th, 2015 at 9:26:54 AM"
Only in America. The rest of the world ends on 3rd January 2041, but I'm still trying to work out at what time of day - foovo, on 10/12/2007, -0/+6As an engineer, I find 355/113 (3.1415929203539823008849557522124) is quite good enough for most purposes.
Surprisingly better than 22/7 (3.1428571428571428571428571428571)
Pi Approx = 3.1415926535897932384626433832795 - Demagogue, on 10/12/2007, -0/+5Wheres all the love for e!?
- srudes2, on 10/12/2007, -0/+5Happy Pi day today everyone!
3.14 :D - 8177, on 10/12/2007, -0/+3Integrals are one of those things that make my want to harm cute furry animals, but when i get one of them correct on a test I feel like i'm on top of the world.
- Jon211, on 10/12/2007, -0/+3PI IS EXACTLY 3
- hiPpymIck, on 10/12/2007, -0/+3mnemonic for 14 places...(80s Open University)
http://www.youtube.com/watch?v=PEFd4tCWtvk&mode=related&search= - roaddemon, on 10/12/2007, -1/+4Hard to believe, but some guy in China (Chao Lu) memorized pi to 67,890 digits.
http://www.recordholders.org/en/list/memory.html#pi - binaryspiral, on 10/12/2007, -0/+3First things first... where's your *****? I've got a turtle head pookin' out.
- dopplerdog, on 10/12/2007, -0/+3Yes, in the limit, a regular polygon becomes a circle. Archimedes was a master at using this technique in geometry, and was able to calculate pi to high precision. He was touching on subjects involving calculus, when calculus wasn't going to be invented for another 1800 years by Liebniz/Newton!! Archimedes is one of the greatest mathematical geniuses of all time (if not THE greatest).
- trogdor282, on 10/12/2007, -2/+5March 14, 1592?
- superal1394, on 10/12/2007, -1/+4My one friend has decided the world shall end on March 14th, 2015 at 9:26:54 AM
- pantless113, on 10/12/2007, -0/+33/14 Yay Pi Day! I missed it by less than an hour! But it was also Einsteins B-day.
- joerod, on 10/12/2007, -0/+2that movie Pi was good too.
- ConceptJunkie, on 10/12/2007, -0/+2e is cool, but phi (The Golden Ratio) is the coolest number ever. Especially for me since I discovered some of its properties completely by random when idly messing around with my calculator in high school math class many years ago:
1/phi = phi - 1
phi^2 = phi + 1
Phi shows up in almost as many places as Pi. - dragoneye, on 10/12/2007, -0/+2What is with all these people and integration. My Calculus class just started integration today too.
- Rhine23, on 10/12/2007, -0/+2Wow did the same thing in AP Calc, except we started integrals last September. All year math ftw. We had French Silk, Pecan, Apple, and some weird reeses one
- ohcoaster, on 10/12/2007, -0/+2Nice. I've heard that just 50 decimal places will calculate the circumference of a circle the size of the universe with accuracy better than the size of a proton. So it's pretty pointless to have more digits of pi than that, even for geeks.
- FluffyArmada, on 10/12/2007, -0/+2@superal : You only have one friend? Bummer. :( [just kidding!]
- changyang1230, on 10/12/2007, -0/+2@spiffytech
If you are referring to the website's "better fraction" (104348 / 33215), it's accurate to more digits but it's not exactly a "better approximation. Let's see how it works:
3.1415926535897932384626433832795... is Pi.
3.1415926539214210447087159415927... is 104348/33215
3.1415929203539823008849557522124... is 355/113.
In the case of 104348/33215, you need to remember 11 figures to get an accuracy of 10 figures. That's pointless. You might as well memorise 11 figures of Pi straightaway.
With 355/113, you only need 6 figures to get an accuracy of 7 figures. That's what a useful fraction is about. It's not about what fraction can get you more digits. You can use continuous fraction to get even closer approximation, but it will be a horrendous fraction with many digits. 335/113 is special because it's "efficient" i.e. you get more figures' accuracy than what you are starting with. And in addition to that, 113, 355 is really easy to remember. -
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