Kreiszahl rule
Kreiszahl rule
(the title says "circle number", but there is no appropriate english translation that i could find)
18 comments
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The thing is, 2π is quite often for sure, but 1π isn't that rare and doubling is so much easier than halving that π still wins against τ
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It's just more intuitive to use tau.
Take for example, the area of a circle.
If we define circumference as
C = τr, then we can actually just use the general formula for an area of a polygon (A = 1/2 p a), which for a circle (infinite-sided polygon) becomesA = 1/2 τr r.C=pandr=ais just circle vs polygon language.Of course πr^2 is the same formula, it's just obscured a little bit more. But now you can see why it's not always 2π - it's because we actually did divide tau in half.
Anyway, I just think its kinda neat. I don't think tau will catch on though 🙂.
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When it comes to pi, doubling is exactly as hard as halving.
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Calculators usually have a pi button but not a tau button :shrug🤷♀️
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i'm in favor of renaming 2π to σ because the symbol looks like somebody is taking a measurement of the circumference of a circle.
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3.141592653589793238? Nah
6.283185307179586476? Nah
9.869604401089358618? YeahEdit (x5) edits are hard
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what is the third number?
edit: ooh, pi^2, i looked it up on the internet (number sequences online lookup tool)
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e^(i pi) = -1 though
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eiτ = 1 though
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Just call it Ludolphian number smh
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japanese Rudolph
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Kreiszahl in der Tat!!!! <3 <3 <3 <3 <3
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i wish i could roll like that <3
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18 comments