Happy Pi Day (3/14) but Pi is still wrong.

[pokerfan]

Not wrong as calculated. It just makes more sense to base the "circle ratio constant" on the radius rather than the diameter. Every time places pi crops up in nature, it's almost always related to the center or origin of the circle, not its diameter. Using a ratio based on the diameter just obscures the beauty or at the very least the clarity of the mathematics.

https://www.scientificamerican.com/article/let-s-use-tau-it-s-easier-than-pi/

[Hugo24601]

1. Yes, but

Does 1=.999 repeated infinitely?

Lol jk

[Fortinbras Armstrong]

10. Yes.

Here is the proof.

(Equation 1) X = .99999...

Multiply both sides by 10, giving Equation 2, 10x = 9.99999...

Subtract Equation 2 from Equation 1:

10X = 9.99999...
- X = .99999

This gives 9X = 9.

Divide both sides by 9, and you get X = 1

If you remember your calculus courses (you did study calculus, didn't you), it can also be proven using Abel's test on a converging series.

[PoliticAverse]

2. Pi is right because it fits perfectly into the most beautiful equation in mathmatics...

https://en.wikipedia.org/wiki/Euler%27s_identity

[pokerfan]

3. But Euler's identity is even more clear with τ

e^iτ = 1

Simple, concise, beautiful.

In English, one complete turn or 'τ' around the unit circle brings you back to 1 (unity), not halfway as 1π which leaves you stranded at -1. It never made any sense to this engineer that it takes 2π to make one revolution.

https://hexnet.org/files/documents/tau-manifesto.pdf

[PoliticAverse]

4. I never did like that it took 2PI for a revolution either. n/t

[Lucky Luciano]

6. It can be inconvenient to carry the "2" around in a lot of equations too!

Like the normal density function and many other functions.

[underpants]

5. You're just making up words

[PoliticAverse]

7. Tau is a very cromulent word. n/t

[matt819]

8. And putting them in random order

[Gothmog]

9. Happy Pi day to all

Link to tweet