Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search
19 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Happy Pi Day (3/14)! (Original Post) MerryHolidays Mar 2022 OP
Thanks for posting Sherman A1 Mar 2022 #1
That was quite irrational of you. TexasTowelie Mar 2022 #2
Bwahahahahahahahaha! Good one! nt MerryHolidays Mar 2022 #3
Toss the heretic overboard! old as dirt Mar 2022 #5
A Legendary date! LetMyPeopleVote Mar 2022 #17
Suspend Your Disbelief (or, how to ruin everything in 7 steps) old as dirt Mar 2022 #4
the social media-driven US political system in 7 easy steps Celerity Mar 2022 #8
Pi Day is July 22nd here (The US is the only major place it is March 14) because Pi expressed as an Celerity Mar 2022 #6
Brilliant! Another day to celebrate! nt MerryHolidays Mar 2022 #7
Pi-yi-yi-yi... calimary Mar 2022 #9
Will this ever end? NT mahatmakanejeeves Mar 2022 #10
Come on now. Dr. Strange Mar 2022 #14
This had better not be a sin of your attitude, cos I'm upset. NT mahatmakanejeeves Mar 2022 #15
Be that as it may. Aussie105 Mar 2022 #11
I think I will wait ... if..fish..had..wings Mar 2022 #12
The Man Who Invented Pi Siwsan Mar 2022 #13
Pi Day is a family holiday LetMyPeopleVote Mar 2022 #16
PI humor? Marthe48 Mar 2022 #18
Got it! nt MerryHolidays Mar 2022 #19

Celerity

(43,120 posts)
6. Pi Day is July 22nd here (The US is the only major place it is March 14) because Pi expressed as an
Mon Mar 14, 2022, 06:50 AM
Mar 2022
approximate fraction is 22/7. As an irrational number, Pi cannot be expressed as a common fraction.

The US writes dates differently than most other nations.

Today is written 14/3 here in Sweden, so July 22nd is 22/7 aka the approximate fractional expression of Pi.

Siwsan

(26,250 posts)
13. The Man Who Invented Pi
Mon Mar 14, 2022, 08:52 AM
Mar 2022


(From Wiki: William Jones (mathematician) William Jones, FRS (1675 – 3 July 1749) was a Welsh mathematician, most noted for his use of the symbol π (the Greek letter Pi) to represent the ratio of the circumference of a circle to its diameter. He was a close friend of Sir Isaac Newton and Sir Edmund Halley.)

https://www.historytoday.com/archive/feature/man-who-invented-pi
It is widely believed that the great Swiss-born mathematician Leonhard Euler (1707-83) introduced the symbol π into common use. In fact it was first used in print in its modern sense in 1706 a year before Euler's birth by a self-taught mathematics teacher William Jones (1675-1749) in his second book Synopsis Palmariorum Matheseos, or A New Introduction to the Mathematics based on his teaching notes.



Latest Discussions»General Discussion»Happy Pi Day (3/14)!