Monday, 25 June, 2018

Google celebrates Pi day with doodle

What is Pi day Pi day is observed annually on March 14, also there is an implied pun on the words ‘pi’ and ‘pie
Terence Owen | 14 March, 2018, 18:20

He pays homage to the mathematical constant by representing the pi formula (circumference divided by diameter) using an actual pie. March 14 (3.14) is celebrated annually as "Pi Day", the approximation day of the mathematical constant π (3.14159265358979).

Google asked Cronut inventor Dominique Ansell to create the doodle for Pi Day, which was first recognised by physicist Larry Shaw. This year the Pi-Day completes 30 years.

Pi, which represents the ratio of a circle's circumference to its diameter, is an important part of the foundation of mathematics.

But many observe the day with a different sort of circle, in the form of pie, or pizza.

Kurdistan airports open to global flights
Baghdad imposed the blockade in September after Iraqi Kurdistan voted for independence in a non-binding referendum . The airports are due to open "within a few days" government spokesman Saad al-Hadithi told The Associated Press.

According to piday.org, Pi has been calculated to over one trillion digits beyond its decimal point.

Pi is useful in every field of science as it's used for calculations involving the volume and surface area of spheres, as well as for determining the rotations of circular objects such as wheels. For instance, there are astounding formulae in which smaller and smaller numbers add up to pi and one of the earliest such infinite series to be discovered says that pi equals four times the sum 1 - 1⁄3 + 1⁄5 - 1⁄7 + 1⁄9 - 1⁄11 + ⋯. The rise of computing technology has led to an arms race of sorts to calculate ever more digits of pi: the current record was set past year by Christian physicist Peter Trueb, calculated pi to 22.4 trillion digits - 22,459,157,718,361, to be exact - outpacing the previous record set in 2013 by 9 million digits. It was however, William Jones, a mathematician from Wales, who first gave the Greek letter its current mathematical definition.

Mathematician Archimedes used polygons with many sides to approximate circles and determined that Pi was approximately "22/7".

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