Gopi Passiflora Posted March 14, 2021 Share Posted March 14, 2021 3/14 or March 14 is Pi Day! (In Europe, 22 July, or 22/7, is Pi Approximation Day.)How many digits of Pi have you memorized? I have memorized 11 digits of pi in Base-Ten: 3.1415926535. I believe that's enough precision to estimate the circumference of a sphere the size of Earth (give or take a few molecules). 1 Link to comment Share on other sites More sharing options...
Ted McGregor Posted March 14, 2021 Share Posted March 14, 2021 (edited) 10 minutes ago, Gopi Passiflora said: How many digits of Pi have you memorized? None. I have a Pi do that for me. Edited March 14, 2021 by TDD123 1 1 Link to comment Share on other sites More sharing options...
Gopi Passiflora Posted March 14, 2021 Author Share Posted March 14, 2021 3 minutes ago, TDD123 said: None. I have a Pi do that for me. Ah...fair enough.... 1 Link to comment Share on other sites More sharing options...
Rowan Amore Posted March 14, 2021 Share Posted March 14, 2021 14 minutes ago, Gopi Passiflora said: 3/14 or March 14 is Pi Day! (In Europe, 22 July, or 22/7, is Pi Approximation Day.)How many digits of Pi have you memorized? I have memorized 11 digits of pi in Base-Ten: 3.1415926535. I believe that's enough precision to estimate the circumference of a sphere the size of Earth (give or take a few molecules). Mmmm pi. 3 1 Link to comment Share on other sites More sharing options...
Madelaine McMasters Posted March 14, 2021 Share Posted March 14, 2021 (edited) 17 minutes ago, Gopi Passiflora said: 3/14 or March 14 is Pi Day! (In Europe, 22 July, or 22/7, is Pi Approximation Day.)How many digits of Pi have you memorized? I have memorized 11 digits of pi in Base-Ten: 3.1415926535. I believe that's enough precision to estimate the circumference of a sphere the size of Earth (give or take a few molecules). Noooooo!!! Earth is about 40e3 KM around. That's 40e6 m and 40e9mm, or 4e10mm. You've memorized pi to eleven places, so you can estimate the circumference of a sphere the size of Earth to give or take a few tenths of a mm. Water molecules are about 275 picometers (275e-12 or 2.75e-10 meters) in diameter, so you'd need to memorize Pi to around 20 digits to get within a few molecules. I've memorized Pi to 10 digits as well, but differ from you in the last digit. Pi to eleven digits is 3.14159265358, so I round to 3.1415926536. Happy Pi day, Gopi! Edited March 14, 2021 by Madelaine McMasters 1 Link to comment Share on other sites More sharing options...
Madelaine McMasters Posted March 14, 2021 Share Posted March 14, 2021 (edited) Grrr, I was doing so well editing posts. If you want to see what I changed, compare Gopi's quote to my now edited post. ;-). Edited March 14, 2021 by Madelaine McMasters 1 Link to comment Share on other sites More sharing options...
Gopi Passiflora Posted March 14, 2021 Author Share Posted March 14, 2021 2 minutes ago, Madelaine McMasters said: Noooooo!!! Earth is about 40e3 KM around. That's 40e6 m and 40e9mm, or 4e10mm. You've memorized pi to eleven places, so you can estimate the circumference of a sphere the size of Earth to give or take a few tenths of a mm. Water molecules are about 275 picometers (275e-12 or 2.75e-10 meters) in diameter, so you'd need to memorize Pi to around 20 digits to get within a few molecules. I've memorized Pi to 10 digits as well, but differ from you in the last digit. Pi to eleven digits is 3.14159265358, so I use use 3.1415926536. Happy Pi day, Gopi! Ah, I see. Thanks for the info and Happy Pi Day to you, too! Link to comment Share on other sites More sharing options...
Rowan Amore Posted March 14, 2021 Share Posted March 14, 2021 (edited) 7 minutes ago, Madelaine McMasters said: Grrr, I was doing so well editing posts. If you want to see what I changed, compare Gopi's quote to my now edited post. ;-). As if I'd know if anything were incorrect? Edited March 14, 2021 by Rowan Amore Link to comment Share on other sites More sharing options...
Madelaine McMasters Posted March 14, 2021 Share Posted March 14, 2021 Before: Pi to eleven digits is 3.14159265358, so I use use 3.1415926536. After: Pi to eleven digits is 3.14159265358, so I round to 3.1415926536. You could tell what was incorrect. You were either too lazy, too intimidated, or too disinterested to check, Rowan! Plplplplplplpl!!! Link to comment Share on other sites More sharing options...
Rat Luv Posted March 14, 2021 Share Posted March 14, 2021 45 minutes ago, Gopi Passiflora said: How many digits of Pi have you memorized? The first one 1 1 Link to comment Share on other sites More sharing options...
Rowan Amore Posted March 14, 2021 Share Posted March 14, 2021 (edited) 22 minutes ago, Madelaine McMasters said: Before: Pi to eleven digits is 3.14159265358, so I use use 3.1415926536. After: Pi to eleven digits is 3.14159265358, so I round to 3.1415926536. You could tell what was incorrect. You were either too lazy, too intimidated, or too disinterested to check, Rowan! Plplplplplplpl!!! All of the above. 😁My eyes tend to glaze over as soon as numbers are involved. Edited March 14, 2021 by Rowan Amore Link to comment Share on other sites More sharing options...
RunawayBunny Posted March 14, 2021 Share Posted March 14, 2021 48 minutes ago, Gopi Passiflora said: How many digits of Pi have you memorized? Me: 3 Link to comment Share on other sites More sharing options...
Rolig Loon Posted March 14, 2021 Share Posted March 14, 2021 1 hour ago, Gopi Passiflora said: How many digits of Pi have you memorized? I don't need to memorize digits, I just count letters per word: "How I wish I could recollect PI easily today, and quite properly." 3 1 4 1 5 9 2 6 5 3 5 8 2 1 Link to comment Share on other sites More sharing options...
Rolig Loon Posted March 14, 2021 Share Posted March 14, 2021 And for another odd PI factoid .... The number of seconds in a year is 60x 60 x 24 x 365 = 31,536,000 which is within less than 0.2% of PI x 10^7. Not a bad first approximation. 3 Link to comment Share on other sites More sharing options...
Sorciaa Posted March 14, 2021 Share Posted March 14, 2021 1 Link to comment Share on other sites More sharing options...
Bree Giffen Posted March 14, 2021 Share Posted March 14, 2021 I have always remembered PI up to 3.14159. See? I wrote that out without looking up above to Gopi's original post. 1 Link to comment Share on other sites More sharing options...
Arduenn Schwartzman Posted March 14, 2021 Share Posted March 14, 2021 (edited) 3.1415265 Looking it up now... Oh, darn forgot the 9. 3.14159265 In the original novel Contact, by Carl Sagan, Dr. Ellie Arroway is told by the alien, who is dressed up as her father, in order to not freak her out, *spoiler alert* that the universe was made by an even more advanced civilization than theirs, that snuck its signature in the base two version of pi. Deep inside, trillions of trillions of digits down, a little image frame was encoded, of a field of zeros with ones inside, that makes a perfect pixel art circle. Well, here's ten million digits of pi in base ten: https://introcs.cs.princeton.edu/java/data/pi-10million.txt There's one instance in that segment of digits that's seven zeroes in sequence. It's somewhere near the 4.5 millionth digit: Edited March 14, 2021 by Arduenn Schwartzman 1 Link to comment Share on other sites More sharing options...
Love Zhaoying Posted March 14, 2021 Share Posted March 14, 2021 Can we just say 3.1 and call it a day? 1 1 1 Link to comment Share on other sites More sharing options...
Garnet Psaltery Posted March 14, 2021 Share Posted March 14, 2021 40 minutes ago, Arduenn Schwartzman said: In the original novel Contact, by Carl Sagan, Dr. Ellie Arroway is told by the alien, who is dressed up as her father, in order to not freak her out, *spoiler alert* that the universe was made by an even more advanced civilization than theirs, that snuck its signature in the base two version of pi. Deep inside, trillions of trillions of digits down, a little image frame was encoded, of a field of zeros with ones inside, that makes a perfect pixel art circle. Well, here's ten million digits of pi in base ten: https://introcs.cs.princeton.edu/java/data/pi-10million.txt There's one instance in that segment of digits that's seven zeroes in sequence. It's somewhere near the 4.5 millionth digit: We're living on a flat Earth. I knew it. Link to comment Share on other sites More sharing options...
shireena1 Posted March 14, 2021 Share Posted March 14, 2021 (edited) Edited March 14, 2021 by shireena1 1 Link to comment Share on other sites More sharing options...
Arduenn Schwartzman Posted March 14, 2021 Share Posted March 14, 2021 48 minutes ago, Garnet Psaltery said: We're living on a flat Earth. I knew it. 2 Link to comment Share on other sites More sharing options...
Arduenn Schwartzman Posted March 14, 2021 Share Posted March 14, 2021 Is there a mathematician in the room? Are there number sequences that can not appear in pi? If all number sequences can occur in there, than it's a 100% certain that pi contains the Unicode-version of the complete works of Shakespeare. (An infinite amount of them.) 2 Link to comment Share on other sites More sharing options...
Love Zhaoying Posted March 14, 2021 Share Posted March 14, 2021 The two relevant Dad jokes I grew up with: 1) Teacher: Pi R Squared Student: No, pi are round! 2) Grandmother: I am T-I-R-D, I've been making P-I-S all day! 1 Link to comment Share on other sites More sharing options...
Love Zhaoying Posted March 14, 2021 Share Posted March 14, 2021 3 hours ago, Garnet Psaltery said: We're living on a flat Earth. I knew it. When dealing with Flat-Earthers, I prefer to think of it as "Erf". Link to comment Share on other sites More sharing options...
Love Zhaoying Posted March 14, 2021 Share Posted March 14, 2021 3 hours ago, Arduenn Schwartzman said: There's one instance in that segment of digits that's seven zeroes in sequence. It's somewhere near the 4.5 millionth digit: So, is that your..slice of pie? Link to comment Share on other sites More sharing options...
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