Fw: [aamt-l] Lots of PI stuff from the London Times

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Rex Boggs

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Jan 7, 2010, 6:47:18 AM1/7/10
to middleschoolmaths
Forwarded from Douglas Butler, who is the author of Autograph.
Note that his statement below is wrong; the article states that pi
is now known to 2.17 trillion digits.

He is only off by a factor of 1000 or so .. :-).

Cheers

Rex


> Greetings from frozen Britain!
>
> This appeared in the London Times this morning
> to celebrate PI being known now to 213 billion digits:
> http://www.timesonline.co.uk/tol/news/science/article6978433.ece
>
> I particularly likes the statements:
>
> "After all, pi to 11 digits would be enough to calculate
> the circumference of the Earth to within a millimeter"
>
> "46 digits would give a circle round the known universe
> to within the radius of a hydrogen atom"
>
> Perhaps this needs checking!
>
> Douglas

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