Happy Pi day

All of you have a happy international Pi day.

pi=3.13? may wanna check those calculations again =]

It's not pi day yet..

woohoo, pi day is finally here!! :uhh: :tongue: Can't wait til pi+0.01 day

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woohoo, pi day is finally here!! :uhh: :tongue: Can't wait til pi+0.01 day
Another hour and a half for me..

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Hmmmm, $\pi$

I'd rather remember today as Einstein's birth anniversary, and wait till April 31st for pi-day.

pi day again already? Just where has the year gone? I didn't even get my pi day shopping done.

Homework Helper
Are there e and i days, too? :tongue2:

Are there e and i days, too? :tongue2:
e-day: 27th January
i-day: e^(i*pi/2) = 27th Jan^(i*31st April/2) = :uhh:

Homework Helper
The only problem is, how to decide if it's celebrated at 3:14 am or 3:14 pm.

The only problem is, how to decide if it's celebrated at 3:14 am or 3:14 pm.
3.14 is taken care of by the date. So you celebrate it at 1:59:26(.5) in the morning (or in the afternoon if you don't use a 24-hour clock).

The only problem is, how to decide if it's celebrated at 3:14 am or 3:14 pm.
I don't see it as a problem. We can precisely define pi's birth in this scheme, minutes second and everything, can't we ?

I mean :
month day hour minute sec...
3 14 15 9 27

now, maybe I see your objection
why not :
month day hour minute sec...
3 1 1 9 2
or :
month day hour minute sec...
3 14 1 59 27
...

indeed, I assumed that one fills as much decimal places as possible at each step. Thus for instance I took 9 minutes, because 92 minutes exceeds 60=1h... This might be a little simplistic, or even unesthetical. But eh, why not celebrating on the first of march otherwise ?

A more esthetical solution, would be to write down everthing in a decimal basis.

3.14 is taken care of by the date. So you celebrate it at 1:59:26(.5) in the morning (or in the afternoon if you don't use a 24-hour clock).
I do use a 24-hour clock, but I would have thought we need to pick up 15:9:26

this is highly debatable...

Homework Helper
Now you see it indeed is a sophisticated issue, gentlemen.

Homework Helper
Oh yes, and there's another issue. In my country, we write the day first, and then the month, so we have no pi day! Which proves that the pi day is a those-who-write-the-month-first-o-centric product. Down with it! :tongue2:

Math Is Hard
Staff Emeritus
Gold Member
Pi day at last! Can't wait to get up to campus at lunch time. Usually the math department sells yummy pie slices for a buck.

Oh yes, and there's another issue. In my country, we write the day first, and then the month, so we have no pi day! Which proves that the pi day is a those-who-write-the-month-first-o-centric product. Down with it! :tongue2:
And that's why I said that I would rather wait will April 31st. This is strictly a US-centric Pi-day.

I know the first 120 digits of pi:

3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651

whew!

thats all I know off the top of my head.

thats all I know off the top of my head.
so, what is the accuracy with which you can calculate the circumference of the galaxy, supposing you know it's diameter with a precision equivalent to that of the size of the proton ?

Homework Helper
I know the first 120 digits of pi:

3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651

whew!

thats all I know off the top of my head.
Did you have a pi-digit-listing contest today? :tongue:

haha, our math building had free pie for all starting at 1:59 this afternoon.
and you can also buy pi day t-shirts for pi^2 dollars ($9.87) radou Homework Helper and you can also buy pi day t-shirts for pi^2 dollars ($9.87)
Did someone actually buy one of these? :rofl:

Wow, 120 digits eh?
I know:
3.141592653597932384626

22 digits...