“So here we have π squared, which an engineer would call ‘10.’” –Frank King

This March 14th, stump your friends with these amazing facts about the world’s favorite transcendental number!

Image credit: Wikimedia Commons users TechnoGuyRob and InverseHypercube.

Image credit: Wikimedia Commons users TechnoGuyRob and InverseHypercube.

I’ve written about Pi Day twice before here on Scienceblogs, but for this year’s festivities, I’ve assembled a collection of my favorite facts about everyone’s favorite irrational but indispensible number, from history to pure mathematics to birthdays to astronomy!

Image credit: Emil Ivanov, via http://www.emilivanov.com/CCD%20Images/M38_LRGB.htm, and cropped by me.

Image credit: Emil Ivanov, via http://www.emilivanov.com/CCD%20Images/M38_LRGB.htm, and cropped by me.

So go and join our celebration of Pi day, and chime in by sharing your favorites!

Comments

  1. #1 dean
    March 16, 2014

    Set your clocks now for March 14 2015 at 9:26:53.

  2. #2 James
    March 17, 2014

    One last fun fact is that 3.14 in a mirror is PIE …
    While not a correct spelling still pretty interesting.

  3. #3 gloria
    east palo alto
    March 18, 2014

    how dose tht make any since i think i didnt read it correct let me read it again

  4. #5 Jean-Pierre Stander u15002536
    Preatoria
    April 19, 2015

    Because Pie is an irrational number it can be said that every single person’s exact time and date of birth would be somewhere in the decimals of the fraction.

  5. #6 d moolman
    rsa
    April 19, 2015

    If decimals of fractions can be celebrated, the celebration of PI -DAY is even more appropriate. Science is merely a thought of what already exist and only come to the knowledge of mankind once discovered. So we can celebrate everyday!!!

  6. #7 Leonardo
    Oudtshoorn
    April 19, 2015

    For 24 hours, Pi Day 2015 will be the one and only Pi Day in the next 100 years that will actually reflect the first five numbers in everyone’s favorite irrational number, pi, which is 3.1415.