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今天是一个吃派的好日子。为什么呢？今天是3.14倒过来或者镜像显示就是pie。  每年的3月14日是圆周率日。希腊字母“π”是数学中用来表示一个常数的符号——圆的周长与直径之比——大约是3.14159。对于数学爱好者来说，每年的圆周率日都是一个背诵圆周率的无限数字、和朋友们谈论数学以及吃派的机会。 关于π，你知道哪些有趣的小知识呢？赶快来读今天的内容吧！ 1. The symbol for Pi has been in use for over 250 years. The symbol was introduced by William Jones, a Welsh mathematician, in 1706. The symbol was made popular by the mathematician Leonhard Euler. 圆周率的符号已经使用了250多年。1706年，威尔士数学家威廉·琼斯开始使用这一符号。这个符号是由数学家莱昂哈德·欧拉普及开来的。  2. March 14 or 3/14 is celebrated as pi day because 3.14 are the first digits of pi. Math nerds around the world love celebrating this infinitely long, never-ending number. 3月14日被称为圆周率日，因为3.14是圆周率小数点后最开始的数字。全世界的数学迷都喜欢庆祝这个无限长、永不结束的数字。  3. The record for reciting the most number of decimal places of Pi was achieved by Rajveer Meena at VIT University, Vellore, India on 21 March 2015. He was able to recite 70,000 decimal places. To maintain the sanctity of the record, Rajveer wore a blindfold throughout the duration of his recall, which took an astonishing 10 hours! 2015年3月21日，印度维洛尔大学的Rajveer Meena创下了背诵圆周率小数点后最多位数的记录。他能背诵小数点后七万个数位。为了保持记录的神圣性，Rajveer在整个回忆过程中都戴着眼罩，其时间长达惊人惊讶的10个小时!  4. Pi is actually a part of Egyptian mythology. People in Egypt believed that the pyramids of Giza were built on the principles of pi. The vertical height of the pyramids have the same relationship with the perimeter of their base as the relationship between a circle’s radius and its circumference. 圆周率实际上是埃及神话的一部分。埃及人认为吉萨金字塔是根据圆周率的原理建造的。金字塔的垂直高度与底部周长的关系，就像圆的半径与周长的关系一样。  5. Physicist Larry Shaw started celebrating 14 March as Pi day at San Francisco’s Exploratorium science museum. There he is known as the Prince of Pi. 物理学家拉里·肖开始在旧金山探索科学博物馆庆祝3月14日的圆周率日。在那里，他被称为派王子。  6. Chinese people were far ahead of the West in finding the digits of pi. Why? Chinese mathematicians were ahead in the pi game because of two reasons: we had decimal notations and we had a symbol for the number zero. It wasn’t until the late middle ages that European mathematicians started using the number zero. At that time, European mathematicians partnered with Arab and Indian minds to bring the symbol of zero into their system. 中国人在发现圆周率数字方面远远领先于西方人。这是为什么呢?中国数学家在圆周率游戏中领先于世有以下两个原因:我们有十进制符号，我们有数字零的符号。直到中世纪晚期，欧洲数学家才开始使用数字0。当时，欧洲数学家与阿拉伯人和印度人合作，将零的符号引入了他们的系统。  7. Even today, people are racing to calculate more digits of pi in a never ending competition. In the year 2010, a Japanese engineer and an American computer wizard broke the record for the most number of pi digits by calculating up to 5 trillion digits of pi. The amazing part is that they didn’t use any supercomputers. They just used desktop computers, 20 external hard disks, and their brilliant minds. 即使在今天，人们也在无休止的竞赛中竞相计算圆周率的更多数字。2010年，一位日本工程师和一位美国计算机奇才计算出了圆周率的5万亿个数字，打破了圆周率数字最多的记录。令人惊讶的是他们没有使用任何超级计算机。他们只用了台式电脑，20个外接硬盘，还有他们聪明的头脑。  8. Interestingly, some of the most famous scientists in the world have a connection to pi day. Albert Einstein was born on March 14th, 1879. Stephen Hawking died on March 15th, 2018 at the age of 76. 有趣的是，世界上一些最著名的科学家都与圆周率日有关。阿尔伯特·爱因斯坦出生于1879年3月14日。斯蒂芬·霍金于2018年3月15日去世，享年76岁。  最后附几个Pi Day的梗图，大家记得吃派庆祝哦~   来源: https://www./ |
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