A Quotient? A Date?

yetiyeti Posts: 732
edited 2020-07-21 - 16:16:36 in General Discussion
\o/ 22/7 \o/

Do you have stories about PI approximations?
Easy to remember and/or just funny ones?

What about 355/113?
A bit longer than 22/7 but more accurate and easy to remember via 113355.
Break it in halves and divide the bigger by the smaller one.

Or look at the 32bit unixcalypse:
The last 32bit unixdate is 2038-01-19 03:14:07 UTC.
PI±ε obviously hides everywhere!
So date +%H.%M -d@`printf '%d' 0x7FFFFFFF` yields 03.14
(Needs the GNUish flavour of `date`.)
I just stumbled over "Flipping A Coin 10,000 Times With A Dedicated Machine" which should open a door to PI via "Hey! You Can Find Pi With a Random Walk. Here's How"


  • If you're boneheaded enough, π hides everywhere:

    Interestingly, my casio fx-9860GII (well, a modded fx-9750GII, really) doesn't seem to have that problem at all. Then again, that runs on a 50 MHz SH4 with some 256K(?) RAM, whereas the non-graphing calcs probably use the tiniest microcontroller they can get away with.
  • yetiyeti Posts: 732
    edited 2020-07-21 - 16:40:10
    These wannabesmarties are annoying!
    (I mean the calculator!)
    Obviously nobody understands what they are doing.

    𝕭𝖚𝖙 𝖓𝖔𝖜 𝖋𝖔𝖗 𝖘𝖔𝖒𝖊𝖙𝖍𝖎𝖓𝖌 𝖒𝖆𝖞𝖇𝖊 𝖓𝖔𝖙 𝖘𝖔 𝖈𝖔𝖒𝖕𝖑𝖊𝖙𝖊𝖑𝖞 𝖉𝖎𝖋𝖋𝖊𝖗𝖊𝖓𝖙...

  • ...and not to forget...

    ...and the bonus track...

    Maybe the thread needs a new title like "PI is everywhere"?

  • yetiyeti Posts: 732
    edited 2020-07-21 - 16:51:42
    I take a break after this one... promised!

  • ReinhardReinhard Posts: 430
    edited 2020-07-30 - 05:50:11
  • ercoerco Posts: 19,738
    This dork knew Pi to 50 decimal places back in gradeschool. Just in case.
  • erco wrote: »
    This dork knew Pi to 50 decimal places back in gradeschool. Just in case.

    Wow, very impressive; this wasn't really on my radar until I was 16, when someone bet me $5 I couldn't memorize pi to 100 decimal (I made them specify decimal; I offered to do it in binary) places in 5 minutes. I won, and still remember (depending on the day) 25-40 of them. It's a great party trick, as well as most element masses, square roots, e, c, metric/imperial conversions, etc., to 7 or 8 places. I never expended any effort on these; I just remember them, well, because.

    My story about pi approximation is that, in third grade, my teacher told us that pi is a non-repeating decimal, and that it was equal to 22/7. Well, I just had to try, so, on paper (this was well before hand-held calculators), I divided it out and found out that it repeats (3.142857 142857 142857...). Confronted with this, my teacher was confounded and had to ask an 8th grade math teacher what was going on here. Fortunately, it was near the end of the school year, because I realized I couldn't trust anything that teacher told me, and I went into 4th grade with *much* more skepticism about everything I was told. I'm still that 4th-grader.
  • @altosack Unluckily some teachers don't deserve their "title".

    Loosely related:

    Fun with splitting hairs about PI:

    *sigh!* Her maths series ended.
  • Albert Einstein was born on March 14th, 1879.
    Stephen Hawking died on March 14th, 2018.
    3/14 is Pi Day.
  • And they both ignored space plasma & Plasma Cosmology - for the sake of "spacetime" and Big Bang Cosmology.
  • The topic is PI, not the electric universe!
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