There's a celebration for everything these days--National Yo-Yo Day, Ice Cream Day, even Corduroy Day. March 14 was Pi Day--3.14... get it? On Pi Day, which celebrates the number that represents the ratio of circumference to diameter of a circle, enthusiasts had pie-eating contests and played educational games.
Guess what today is! It's Tau Day. Tau represents the circumference of a circle divided by the radius, which is approximately 6.28. Today is June 28... get it?
Apparently, people have been celebrating this day for 10 years. On Tau Day last year, theoretical physicist Michael Hartl launched the Tau Manifesto, which explained why pi is confusing and instead should be replaced with tau.
One of his reasons: Since tau is the ratio of circumference to radius of a circle, circles are more naturally defined by their radius than diameter. (Are you still following this?)… Read more