Math Memes

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Memes related to mathematics.

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Kreiszahl rule (lemmy.blahaj.zone)

submitted 2 weeks ago by gandalf_der_12te@lemmy.blahaj.zone to c/mathmemes@lemmy.blahaj.zone

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(the title says "circle number", but there is no appropriate english translation that i could find)

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[–] agamemnonymous 2 points 2 weeks ago

π is the ratio between a circle's diameter and its circumference. While diameter was much easier to measure historically, that ratio is unnecessarily arbitrary.

τ is the ratio between a circle's radius and circumference. The radius much more directly defines a circle, so τ is the more fundamental ratio.

½τ more obviously indicates the geometric significance of its coefficient than 2π.