"46.Thirty-nine decimal places of pi suffice for computing the circumference of a circle girding the known universe with an error no greater than the radius of a hydrogen atom."

With my calculator I calculated a ratio of 37 decimals, but that's probably from digital rounding errors.

There's a german poem to memorize the first 20 digits of pi. I learned it back in school (out of curiosity) and I still know it.

lastlib

(28,609 posts)

2. The floating point error inherent in solid-state microprocessors....

Reply to DetlefK (Reply #1)

Wed Mar 14, 2012, 12:05 PM

Mar 2012

...would make anything past the 16th decimal place on a calculator suspect.

(But it's cool anyway!) Happy Pi Day! In four years, we'll have a BIG blowout! (3.14.16)

progressoid

(53,379 posts)

3. Kate Bush - Pi

Reply to Dr. Strange (Original post)

Wed Mar 14, 2012, 12:19 PM

Mar 2012

pokerfan

(27,677 posts)

4. pi is still wrong

Reply to Dr. Strange (Original post)

Wed Mar 14, 2012, 01:12 PM

Mar 2012

Vi Hart's fantastic video from last year:

Dr. Strange

(26,058 posts)

5. Viva la tau!

Reply to pokerfan (Reply #4)

Wed Mar 14, 2012, 02:13 PM

Mar 2012

Jim Lane

(11,175 posts)

6. "It's Adam and Pi, not Adam and Tau!"

Reply to pokerfan (Reply #4)

Wed Mar 14, 2012, 05:11 PM

Mar 2012

Credit for that response to DUer mahatmakanejeeves, in a thread keyed to Tau Day last year: http://www.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=102&topic_id=4900188&mesg_id=4900188

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