210313 -- BAODING, March 13, 2021 -- A teacher introduces an exhibit to the visiting students at the Zu Chongzhi Memorial Hall at the Zu Chongzhi High School in Laishui County, north China s Hebei Province, March 13, 2021. March 14 is celebrated around the world as Pi Day, since 3, 1, and 4 are the first three significant digits of the mathematical constant which denotes the ratio of a circle s circumference to its diameter. Zu Chongzhi, a Chinese mathematician and astronomer from the 5th century, had made a remarkable achievement by determining the Pi value with an accuracy of seven decimal p

210313 -- BAODING, March 13, 2021 -- A teacher introduces an exhibit to the visiting students at the Zu Chongzhi Memorial Hall at the Zu Chongzhi High School in Laishui County, north China s Hebei Province, March 13, 2021. March 14 is celebrated around the world as Pi Day, since 3, 1, and 4 are the first three significant digits of the mathematical constant which denotes the ratio of a circle s circumference to its diameter. Zu Chongzhi, a Chinese mathematician and astronomer from the 5th century, had made a remarkable achievement by determining the Pi value with an accuracy of seven decimal p Stock Photo

RMID:2RR75HA

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Imago / Alamy Stock Photo

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2RR75HA

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38.3 MB (1.2 MB Compressed download)

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4716 x 2838 px | 39.9 x 24 cm | 15.7 x 9.5 inches | 300dpi

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13 March 2021

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210313 -- BAODING, March 13, 2021 -- A teacher introduces an exhibit to the visiting students at the Zu Chongzhi Memorial Hall at the Zu Chongzhi High School in Laishui County, north China s Hebei Province, March 13, 2021. March 14 is celebrated around the world as Pi Day, since 3, 1, and 4 are the first three significant digits of the mathematical constant which denotes the ratio of a circle s circumference to its diameter. Zu Chongzhi, a Chinese mathematician and astronomer from the 5th century, had made a remarkable achievement by determining the Pi value with an accuracy of seven decimal places, between 3.1415926 and 3.1415927. His calculation remained the world s most accurate for nearly 1, 000 years until the 14th century. CHIN PUBLICATIONxNOTxINxCHN

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