Date: 23/01/2019 07:51:07
From: sibeen
ID: 1334138
Subject: Calculating pi

A weird video I watched last evening (5 minutes) which shows a very, very inefficient way to give pi, but it is also completely mind blowing.

https://www.youtube.com/watch?v=HEfHFsfGXjs

A follow up video of around 15 minutes goes into the explanation on how pi falls out of this physical phenomenon.

https://www.youtube.com/watch?v=jsYwFizhncE

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Date: 23/01/2019 08:30:24
From: Bubblecar
ID: 1334162
Subject: re: Calculating pi

It’s certainly unexpected.

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Date: 23/01/2019 13:02:38
From: Peak Warming Man
ID: 1334284
Subject: re: Calculating pi

Bloody awesome.

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Date: 23/01/2019 13:04:48
From: sibeen
ID: 1334285
Subject: re: Calculating pi

Peak Warming Man said:


Bloody awesome.

Yeah, I saw it last night and thought, WTF!

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Date: 23/01/2019 13:07:04
From: Peak Warming Man
ID: 1334286
Subject: re: Calculating pi

sibeen said:


Peak Warming Man said:

Bloody awesome.

Yeah, I saw it last night and thought, WTF!

While he didn’t discover it he’d make a great teacher.

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Date: 23/01/2019 13:10:01
From: dv
ID: 1334288
Subject: re: Calculating pi

The universe is weird.

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Date: 23/01/2019 13:11:34
From: mollwollfumble
ID: 1334289
Subject: re: Calculating pi

+1

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Date: 23/01/2019 13:13:13
From: sibeen
ID: 1334291
Subject: re: Calculating pi

dv said:


The universe is weird.

And Droppy complains about spherical, frictionless objects :)

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Date: 23/01/2019 13:23:47
From: mollwollfumble
ID: 1334297
Subject: re: Calculating pi

There are some other weird ways to calculate pi.

This link includes 90 of them.

http://mathworld.wolfram.com/PiFormulas.html

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Date: 23/01/2019 13:25:26
From: The Rev Dodgson
ID: 1334299
Subject: re: Calculating pi

mollwollfumble said:


There are some other weird ways to calculate pi.

This link includes 90 of them.

http://mathworld.wolfram.com/PiFormulas.html

90?

That’s nuttin.

Here’s 100:

https://newtonexcelbach.com/2019/01/13/mpmath-for-excel/

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Date: 23/01/2019 13:28:11
From: mollwollfumble
ID: 1334301
Subject: re: Calculating pi

The Rev Dodgson said:


mollwollfumble said:

There are some other weird ways to calculate pi.

This link includes 90 of them.

http://mathworld.wolfram.com/PiFormulas.html

90?

That’s nuttin.

Here’s 100:

https://newtonexcelbach.com/2019/01/13/mpmath-for-excel/

OMG

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Date: 23/01/2019 13:31:30
From: The Rev Dodgson
ID: 1334304
Subject: re: Calculating pi

sibeen said:


A weird video I watched last evening (5 minutes) which shows a very, very inefficient way to give pi, but it is also completely mind blowing.

https://www.youtube.com/watch?v=HEfHFsfGXjs

A follow up video of around 15 minutes goes into the explanation on how pi falls out of this physical phenomenon.

https://www.youtube.com/watch?v=jsYwFizhncE

I enjoyed it too.

Another mechanical phenomenon that has a pi in it for no obvious reason is the equation for the vertical load on a column that will cause it to buckle, as discovered by our mate Euler.

Some engineer talks about it here:
https://newtonexcelbach.com/2010/06/19/elegant-solutions-column-buckling-and-the-hole-through-the-middle-of-the-earth/

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Date: 23/01/2019 13:34:50
From: Cymek
ID: 1334305
Subject: re: Calculating pi

I like the one done with actual pies and you have to evenly share 22 pies amongst 7 people

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Date: 23/01/2019 13:38:27
From: mollwollfumble
ID: 1334308
Subject: re: Calculating pi

The Rev Dodgson said:


sibeen said:

A weird video I watched last evening (5 minutes) which shows a very, very inefficient way to give pi, but it is also completely mind blowing.

https://www.youtube.com/watch?v=HEfHFsfGXjs

A follow up video of around 15 minutes goes into the explanation on how pi falls out of this physical phenomenon.

https://www.youtube.com/watch?v=jsYwFizhncE

I enjoyed it too.

Another mechanical phenomenon that has a pi in it for no obvious reason is the equation for the vertical load on a column that will cause it to buckle, as discovered by our mate Euler.

Some engineer talks about it here:
https://newtonexcelbach.com/2010/06/19/elegant-solutions-column-buckling-and-the-hole-through-the-middle-of-the-earth/

Euler buckling. I know about that. Good one.

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Date: 23/01/2019 22:53:39
From: Kothos
ID: 1334652
Subject: re: Calculating pi

That’s wonderful.

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Date: 23/01/2019 22:54:51
From: roughbarked
ID: 1334653
Subject: re: Calculating pi

Kothos said:


That’s wonderful.

I can only agree.

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