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Happy Pi Day!
Posted by Joey on 14 March 2003, 01:00 GMT

In honor of this most nerdy of holidays, I am typing this article on my TI-89 with the assistance of my TI-Keyboard. There are a few pi-related things worth mentioning...

  • If you haven't already, go out and rent the movie Pi. Although it is rated R [in the USA -- Henrik], I saw it when I was 15 and received no ill effects. It is absolutely worth plunking down a few bucks for, unless you have some strange aversion to power drills. (Shhh... don't ruin it!)
  • Since last Pi Day, the record for the most digits of pi calculated was broken. A super-computer cluster in Japan calculated a whopping 1.2411 trillion digits of pi. (Of course, my cluster of Beowulf TI-81's will beat that some day.)
  • Although it has been available since 1999, it's worth mentioning Andreas Wahlin's Pi Training for the TI-89. By using it, I have managed to memorize 133 digits of pi.
  • 99% of girls and English teachers do not care at ALL about Pi Day, and will look upon you unfavorably if you mention it. General rule of thumb: Do not mention Pi Day to anyone unless you wouldn't feel silly telling them that "all your base are belong to us."
  • Nerd holidays are excellent excuses for postponing tests and eating pie during class. At the time of this posting, it isn't yet Pi Day in the U.S., so you've still got plenty of time to run out and buy pies for your math class. DOITGORIGHTNOW!
  • At 1:59PM (and 26 seconds, if you feel the need to be precise), it is advisable to spontaineously recite all of your memorized digits of pi aloud. Do this even if you think pi = 3.1416.
  • Instead of sleeping, spend all night wondering why ln(-1)/i = 4*(.5!)^2 = pi.
  • Keep in mind that being a nerd is a great gift, and that it will pay off in the long run. Word.

 


The comments below are written by ticalc.org visitors. Their views are not necessarily those of ticalc.org, and ticalc.org takes no responsibility for their content.


Re: Happy Pi Day!
lord_nightrose Account Info
(Web Page)

You forgot my Pi Memorization Aid...
http://www.ticalc.org/archives/ files/fileinfo/214/21485.html

     14 March 2003, 08:45 GMT


Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

What about mine and the updated one that Jrock did?

     14 March 2003, 20:17 GMT


Re: Re: Re: Happy Pi Day!
jrock7286  Account Info

Did you like that one No_one???

     15 March 2003, 02:16 GMT


Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

Yes, I did :)

     15 March 2003, 18:14 GMT


Re: Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

I think the options you added look better in the dialog box, the way you did it :) I was too lazy to make it look good or anything LOL

     15 March 2003, 22:33 GMT

Re: Happy Pi Day!
KermMartian  Account Info
(Web Page)

Hm...i'm a little skeptical about KerNo getting 15k downloads...could you guys check out the validity of that?

     14 March 2003, 14:30 GMT

Re: Re: Happy Pi Day!
Morgan Davies  Account Info
(Web Page)

I would like to say that nobody should be skeptical of download ststs. We recently reset the download count of Megacar 83+ onlt fin out that there wasa link to download the file on the front page of ti's website. It downloaded the file from the ticalc.org surver, this massing huge downloads. Once we realized they were actually getting this many downloads we reset it back to its former glory.

     14 March 2003, 21:43 GMT


Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

It's possible... look at VTI. Just about every calcualtor owner needs that program, so they all download it. Then, they make a new version, so they all download it again... that's how I assume the downloads for it get so high, though I think it's amazing how every single week, it always gets over 100 downloads...

     15 March 2003, 18:16 GMT

Happy Birthday!
Dmitriy Myedvyedyev  Account Info
(Web Page)

Well, ironically, today is also Albert Einstein's birthday. He was born on 3/14/1879. He died on 4/18/1955, but he actually got really ill on 4/13... 413 + 314 = mirror images of each other.

Just for the fun of it, do the following calculation and tell me what you get:

1 divided by the square root of one atmosphere (standard atmospheric pressure at sea level) measured in megapascals.

     14 March 2003, 14:57 GMT

Re: Happy Birthday!
Joey Gannon  Account Info
(Web Page)

1/(.101325)^2 = 3.141533... That's only off by about .000059... not bad!

     14 March 2003, 16:40 GMT


Re: Re: Happy Birthday!
Joey Gannon  Account Info
(Web Page)

The equation should have been 1/(.101325)^(1/2). Sorry!

     14 March 2003, 20:28 GMT


Re: Happy Birthday!
no_one_2000_  Account Info
(Web Page)

I thought he died on the 17th...

     14 March 2003, 20:17 GMT

Re: Happy Pi Day!
JcN  Account Info

Mmmmm...ğR Yummy.

     14 March 2003, 18:39 GMT


Re: Re: Happy Pi Day!
JcN  Account Info

That weird symbol WAS a pi symbol when I pasted it into the comment space. WTF happened?!?

     14 March 2003, 21:57 GMT

Re: Re: Re: Happy Pi Day!
AndySoft  Account Info

It probably is a two-byte character and your browser uses a two-byte font for the edit box but the server (or your browser) converted it to one-byte characters.

     14 March 2003, 23:22 GMT


Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

The only thing that I can think of is... uh... what Andy said ;-)

     15 March 2003, 18:19 GMT


Re: Re: Re: Re: Happy Pi Day!
AndySoft  Account Info

So why bother pointing that out :p

     16 March 2003, 01:49 GMT

Re: Happy Pi Day!
JcN  Account Info

ƒÎ Formulas!

ƒÎ/2 = (2*2*4*4*6*6*8....) / (1*3*3*5*5*7*7...)

ƒÎ = 2ã(3) * (1-(1/3^2) + (1/(3^2*5)) - (1/(3^3*7))+...)

ƒÎ/4 = 5arctan(1/7) + 2arctan(3/79)

ƒÎ/4 = 2arctan(1/3) + arctan(1/7)

(ƒÎ^4)/90 = 1/(1^4) + 1/(2^4) + 1/(3^4)...

(ƒÎ^2)/6 = 1/(1^2) + 1/(2^2) + 1/(3^2)...

ƒÎ = 24arctan(1/8) + 8arctan(1/57) + 4arctan(1/239)

ƒÎ = -i(ln -1)

     14 March 2003, 18:53 GMT

Re: Re: Happy Pi Day!
JcN  Account Info

What the...? I typed in a pi character, not fi!

     14 March 2003, 21:56 GMT

Re: Re: Happy Pi Day!
JcN  Account Info

Also, that weird box-shape was a radical symbol before I posted that comment. WHY DID IT NOT POST CORRECTLY?!?

     14 March 2003, 21:58 GMT

Re: Re: Re: Happy Pi Day!
Michael O'Brien  Account Info

Most likely the symbols are not know to the text prog that is dysplaying all of this...or it is not in the windows charset or something.

     14 March 2003, 22:17 GMT

Re: Re: Re: Happy Pi Day!
Benjamin Moody  Account Info

If you want to be understood, stick to 7-bit ASCII.

     14 March 2003, 22:30 GMT


Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

From 0-127? Oh... n/m duh... ;-)

I didn't think that two-byte characters could be written in a text box like that.

     16 March 2003, 17:52 GMT


Re: Re: Re: Re: Re: Happy Pi Day!
Chivo  Account Info

Yeah, I've done non-ASCII (ASCII is only 7 bits, BTW) text in a text box in the Konquerer web browser (it comes with KDE) and I had it translated at that Babelfish translator.

OTOH, I don't know if IE even supports it.

     18 March 2003, 03:12 GMT


Re: Re: Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

€‚ƒ„…†‡ˆ‰Š‹....
aren't those all >=128?

     18 March 2003, 03:18 GMT


Re: Re: Re: Re: Re: Re: Re: Happy Pi Day!
Chivo  Account Info

Yeah, but they're displayed however the browser wishes to render them, depending on how you have it set (like "View->Character Coding" in Mozilla or "View->Encoding" in IE). Whatever the case, codes above 127 are not ASCII characters. They're part of some other standard character set (like DOS or Windows "ASCII").

&#960; <-- This should be a pi symbol, copied from Word.

     18 March 2003, 03:54 GMT


Re: Re: Re: Re: Re: Re: Re: Re: Happy Pi Day!
Chivo  Account Info

Wow, that's weird! It should be "&#960;" in the HTML source, and that instructs web browsers to render a pi symbol regardless of the character encoding (I suppose this feature of HTML hides the messy details of character sets and stuff). It looked like the actual symbol as I was typing, but it changed to "&#960;" in the post.

Anyway, Happy 4 days + &#960; Day!

(I'm aware of all the HTML encoding and the translations ticalc.org does to posts. All of this post should be exactly as I intend it)

     18 March 2003, 04:10 GMT

Re: Re: Re: Happy Pi Day!
Buru-chan

That's weird -- the pi symbol didn't display properly in my browser (just a box); but the radical symbol DID display in my browser! What fonts did you paste from? What font is this page displaying in?

     14 March 2003, 22:31 GMT

Re: Re: Re: Re: Happy Pi Day!
Benjamin Moody  Account Info

Microsoft-style "symbol fonts" are a really dumb way to display non-ASCII, because they're in no way standardized. What would be best is if the whole site switched to Unicode.

     14 March 2003, 22:57 GMT


Re: Re: Re: Re: Happy Pi Day!
JcN  Account Info

I copied them from a Word Document in Times New Roman. What is really creepy is that the symbol changed from my first pi post to the second pi post *runs away* *scared*

     17 March 2003, 02:13 GMT


Re: Re: Re: Re: Re: Happy Pi Day!
AndySoft  Account Info

Did you use a different font?

     17 March 2003, 03:20 GMT

Re: Re: Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

Oh, probably a two-byte character. I think some word processors use those, but they aren't compatible with regular text, I don't think.

     18 March 2003, 01:12 GMT


Re: Re: Re: Re: Re: Re: Happy Pi Day!
JcN  Account Info

No, I used Word default, which is Times New Roman *even more scared*

     20 March 2003, 05:49 GMT


Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

Oh wait... are you looking at the old ASCII set?

     15 March 2003, 18:20 GMT


Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

That's pretty cool... where did you get all of those? Was it joyofpi.com?

     15 March 2003, 18:22 GMT


Re: Re: Re: Happy Pi Day!
JcN  Account Info

I got it from the Joy of Pi book, by David Blatner

     17 March 2003, 02:14 GMT


Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

Ooohhhhhhhh... the book :) If it has 1e6 digits of pi, then it must be pretty thick, right? I wonder if the library has it... mmm... probably (how come I always have to fix typos on that word!?).

     18 March 2003, 01:14 GMT


Re: Re: Re: Re: Re: Happy Pi Day!
JcN  Account Info

Actually, it is pamphlet sized. The digits are spread out in small nodules across the book (i.e. between text, diagrams, tables, blank areas, etc) in 1-point (I think) type size, so they are very, very small numbers.

     20 March 2003, 05:51 GMT

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