白板报 数学集锦 / 03.14
HACKER NEWS / REDDIT

圆周率集锦

讨论目录

121–150 / 13,083 条 · 第 5 / 437 页
  1. Reddit · r/todayilearned计算与算法2012-04-23732 分131 回复

    TIL that using an approximation of Pi to 39 decimals is accurate enough to calculate the circumference of the universe to within one atom.

    15 条相关评论
  2. Reddit · r/mathmemes历史与文化2019-03-151,852 分6 回复

    Day after Pi day

  4. Reddit · r/todayilearned圆周率讨论2022-07-10952 分70 回复

    TIL Astronomer Rudolf Wolf tried to estimate pi using a needle experiment. He conducted experiments throwing the needle 5000 times, obtaining a value of 3.1596

    12 条相关评论
  5. Reddit · r/todayilearned证明与性质2017-12-118,391 分328 回复

    TIL there was an attempt in Indiana to legislate Pi to the number 3.2. It was abandoned on the day of the vote by a professor who pointed out that it was lacking any basis in proof.

    16 条相关评论
  11. Hacker News数位与应用2026-09-2167 分39 回复

    Engineering Memory: On learning to memorize first 100 digits of pi (2024)

    外链资料 ↗

    12 条相关评论
  12. Reddit · r/askmath证明与性质2024-04-25117 分140 回复

    Why is pi irrational?

    36 条相关评论
  16. Reddit · r/askscience数位与应用2017-01-12813 分261 回复

    How do we know pi is infinite?

    36 条相关评论
  18. Reddit · r/askscience证明与性质2011-11-22639 分430 回复

    How do we know pi is never-ending and non-repeating if we're still in the middle of calculating it?

    50 条相关评论
  23. Reddit · r/todayilearned定义与几何2016-04-152,888 分314 回复

    TIL A man who was attacked and beaten outside of a bar turned into a math genius. Jason Padgett never made it past pre-algebra but after the injury, he began seeing the world in pixelated, geometrics shapes, understood…

    7 条相关评论
  24. Reddit · r/askscience历史与文化2020-03-14199 分62 回复

    Happy Pi Day, everybody! Join us for a Pi Megathread!

    13 条相关评论
  26. Reddit · r/todayilearned计算与算法2022-07-0135,002 分955 回复

    TIL, despite its vastness, it only takes 39-40 digits of pi to calculate the size of the observable universe to an accuracy of 1 hydrogen atom. Because of this, NASA uses only 15 digits of pi in even their highest accur…

    81 条相关评论
  27. Reddit · r/explainlikeimfive计算与算法2022-12-08715 分257 回复

    ELI5: How is Pi calculated?

    59 条相关评论
  28. Reddit · r/programming计算与算法2013-01-13889 分251 回复

    How to determine if my calculation of pi is accurate?

    17 条相关评论
  29. Reddit · r/Damnthatsinteresting圆周率讨论2022-01-22622 分88 回复

    Using a mnemonic to remember the value of pi [not OC]

    12 条相关评论