白板报 数学集锦 / 03.14
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圆周率集锦

讨论目录

61–90 / 13,083 条 · 第 3 / 437 页
  3. Reddit · r/todayilearned计算与算法2015-07-122,903 分134 回复

    TIL that in 1873 William Shanks spent 15 years of his life calculating pi to 707 places, BY HAND. However The Last Few Years Were Wasted-- He Made A Mistake After The 527'th Digit.

    13 条相关评论
  4. Reddit · r/mathematics计算与算法2026-09-2151 分42 回复

    算出万亿位之后，怎样检查有没有算错？

    讨论把高精度计算拆成两个问题，怎样生成数位，以及怎样用独立计算或校验检查结果。

    When mathematicians calculate pi out to trillions of digits, how do they verify they answer?

    18 条相关评论
  5. Reddit · r/Showerthoughts数位与应用2017-07-223,035 分114 回复

    I only need to know more digits of pi than the person im talking to before I can just start saying random numbers

    12 条相关评论
  7. Reddit · r/science定义与几何2020-09-2319,050 分1,008 回复

    A team of astronomers discovered a planet roughly the same size as Earth that speeds its way around its host star in a period of just 3.14 days — the same number as the mathematical constant Pi.

    22 条相关评论
  9. Reddit · r/askscience定义与几何2016-12-162,987 分710 回复

    If we don't know the exact value for Pi, how can we know the exact area of a circle if that is 2(pi) Rad?

    143 条相关评论
  13. Reddit · r/todayilearned数位与应用2018-10-29975 分111 回复

    TIL that Matt Patricia is the only rocket scientist coaching in the NFL. Before coaching, he was a working aeronautical engineer who graduated from RPI: a school whose fight song includes "sin", "cosine" and "tangent",…

    8 条相关评论
  17. Reddit · r/technology计算与算法2021-08-17577 分110 回复

    Pi calculated to 62.8 trillion digits with a pair of 32-core AMD Epyc chips, 1TB RAM, 510TB disk space

    17 条相关评论
  19. Reddit · r/programming计算与算法2020-02-17647 分113 回复

    Calculating Pi: My attempt at breaking the Pi World Record

    11 条相关评论
  25. Reddit · r/explainlikeimfive数位与应用2023-01-285,638 分1,166 回复

    ELI5: Why does it matter how many decimals PI has?

    172 条相关评论
  26. Reddit · r/explainlikeimfive计算与算法2019-03-1512,114 分1,362 回复

    ELI5: How is Pi programmed into calculators?

    162 条相关评论
  27. Reddit · r/explainlikeimfive计算与算法2021-05-1617,664 分1,530 回复

    ELI5: How does calculator know and use pi if even super computers can't know all the digits. Does it use like first 100 digits?

    188 条相关评论
  29. Reddit · r/askscience证明与性质2017-08-204,083 分245 回复

    Will we ever know if Pi is a "normal" or "non-normal" irrational number? Is it within the realm of possibility that we will ever find out?

    18 条相关评论
  30. Reddit · r/todayilearned圆周率讨论2015-03-013,435 分402 回复

    TIL in 1897 Indiana tried to change the value of Pi to 3.2 via legislation

    9 条相关评论