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Example calculation of a paternity index. In paternity testing, Paternity Index (PI) is a calculated value generated for a single genetic marker or locus (chromosomal location or site of DNA sequence of interest) and is associated with the statistical strength or weight of that locus in favor of or against parentage given the phenotypes of the tested participants and the inheritance scenario.
Zhao's method involved finding the perimeter of a 16384-sided polygon. A 2048-sided polygon would have sufficiently proved pi is near 355/113, however it is believed he was trying to prove that it was within Zu Chongzhi’s interval, thus the need for 16384 sides. [1] Zhao also claimed that the value of pi could never be exhaustively calculated ...
William Rutherford [2] Calculated 208 decimal places, but not all were correct 152 1844: Zacharias Dase and Strassnitzky [2] Calculated 205 decimal places, but not all were correct 200: 1847: Thomas Clausen [2] Calculated 250 decimal places, but not all were correct 248: 1853: Lehmann [2] 261: 1853: Rutherford [2] 440: 1853: William Shanks [22]
Google engineer Emma Haruka Iwao has calculated pi to 31 trillion digits, breaking the world record.
Shakuntala Devi (4 November 1929 – 21 April 2013) was an Indian mental calculator, astrologer, and writer, popularly known as the "Human Computer".Her talent earned her a place in the 1982 edition of The Guinness Book of World Records.
In 2004, Andrew Huang wrote a song that was a mnemonic for the first fifty digits of pi, titled "I am the first 50 digits of pi". [14] [15] The first line is: Man, I can’t - I shan’t! - formulate an anthem where the words comprise mnemonics, dreaded mnemonics for pi. In 2013, Huang extended the song to include the first 100 digits of pi ...
The south-pointing chariot device was first invented by the Chinese mechanical engineer Ma Jun (c. 200–265 AD). It was a wheeled vehicle that incorporated an early use of differential gears to operate a fixed figurine that would constantly point south, hence enabling one to accurately measure their directional bearings.
Emma Haruka Iwao (born April 21, 1984) is a Japanese computer scientist and cloud developer advocate at Google. [5] [6] In 2019 Haruka Iwao calculated the then world record for most accurate value of pi (π); which included 31.4 trillion digits, exceeding the previous record of 22 trillion.
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