http://www.bbc.co.uk/news/science-environment-13906169
A Day Late and PI/2 Short
Started by ●June 29, 2011
Reply by ●June 29, 20112011-06-29
On 06/29/2011 05:36 AM, Greg Berchin wrote:> http://www.bbc.co.uk/news/science-environment-13906169People in Saudi Arabia are going without beer, and we're worried about whether to use pi or tau? Gimmie a break! -- Tim Wescott Wescott Design Services http://www.wescottdesign.com Do you need to implement control loops in software? "Applied Control Theory for Embedded Systems" was written for you. See details at http://www.wescottdesign.com/actfes/actfes.html
Reply by ●June 30, 20112011-06-30
On 06/29/2011 08:36 AM, Greg Berchin wrote:> http://www.bbc.co.uk/news/science-environment-13906169What a crock! -- Randy Yates % "Watching all the days go by... Digital Signal Labs % Who are you and who am I?" mailto://yates@ieee.org % 'Mission (A World Record)', http://www.digitalsignallabs.com % *A New World Record*, ELO
Reply by ●July 1, 20112011-07-01
On Jun 30, 12:35�am, Randy Yates <ya...@ieee.org> wrote:> On 06/29/2011 08:36 AM, Greg Berchin wrote: > > >http://www.bbc.co.uk/news/science-environment-13906169 > > What a crock!i think that some physicists think the same thing about me when i bring up that Planck Units should normalize 4*pi*G instead of just G and they should normalize epsilon_0 instead of 4*pi*epsilon_0. those are *more* natural units than Planck: it gets rid of pesky factors of 4*pi in comparing flux density to field, but are essentially the same thing. the Tau guys should remember that: +inf integral{ e^(-x^2) dx } = sqrt(pi) or sqrt(tau/2) -inf F.T.{ e^(-pi * t^2) } = e^(-pi * f^2) and, of course, there's Euler's identity: e^(i*pi) + 1 = 0 r b-j
Reply by ●July 2, 20112011-07-02
I have been told -- not tongue in cheek -- that 364 days in a year. Two facts were given as proof: there are 7 days/week and 52 weeks/year. The tau guys are at least better than that. Jerry -- Engineering is the art of making what you want from things you can get.
Reply by ●July 2, 20112011-07-02
On Jul 1, 11:58�pm, Jerry Avins <j...@ieee.org> wrote:> I have been told -- not tongue in cheek -- that 364 days in a year. Two facts were given as proof: there are 7 days/week and 52 weeks/year. The tau guys are at least better than that. >the Tau guys are fine. i just wanted to point out that there are some fundamental little formulae where pi appears without a 2. another is cos(pi*n) = (-1)^n for integer n. and when you consider inverse-square laws, then there is a 4 attached to the pi. but when converting f (in Hz) to omega, the tau factor is the ticket. but i don't want to see *both* symbols (pi and tau) floating around, so i think it's a little late to change. r b-j
Reply by ●July 2, 20112011-07-02
On Jun 29, 7:36�am, Greg Berchin <gjberc...@chatter.net.invalid> wrote:> http://www.bbc.co.uk/news/science-environment-13906169People over in the sci.math newsgroup commented wittily that using tau = 2*pi as a fundamental constant instead of pi was tautological and doubly pious....
Reply by ●July 2, 20112011-07-02
On 07/02/2011 12:44 PM, dvsarwate wrote:> On Jun 29, 7:36 am, Greg Berchin<gjberc...@chatter.net.invalid> > wrote: >> http://www.bbc.co.uk/news/science-environment-13906169 > > People over in the sci.math newsgroup commented > wittily that using tau = 2*pi as a fundamental constant > instead of pi was tautological and doubly pious....<facepalm> -- Randy Yates % "Watching all the days go by... Digital Signal Labs % Who are you and who am I?" mailto://yates@ieee.org % 'Mission (A World Record)', http://www.digitalsignallabs.com % *A New World Record*, ELO
Reply by ●July 2, 20112011-07-02
On Sat, 2 Jul 2011 09:44:31 -0700 (PDT), dvsarwate <dvsarwate@yahoo.com> wrote:>On Jun 29, 7:36=A0am, Greg Berchin <gjberc...@chatter.net.invalid> >wrote: >> http://www.bbc.co.uk/news/science-environment-13906169 > >People over in the sci.math newsgroup commented >wittily that using tau =3D 2*pi as a fundamental constant >instead of pi was tautological and doubly pious....Nice. I'll have to remember that one. Eric Jacobsen http://www.ericjacobsen.org http://www.dsprelated.com/blogs-1//Eric_Jacobsen.php
Reply by ●July 2, 20112011-07-02
On Jun 29, 7:36�am, Greg Berchin <gjberc...@chatter.net.invalid> wrote:> http://www.bbc.co.uk/news/science-environment-13906169and in a new development, here is what Yahoo! News has to say about the matter "We should be celebrating and symbolizing the value that is equal to approximately 6.28 � the ratio of a circle's circumference to its radius � and not to the 3.14'ish ratio of its circumference to its diameter (a largely irrelevant property in geometry)." http://news.yahoo.com/mathematicians-want-goodbye-pi-154001699.html
