Dear Brij, The aim is to drive yet another nail in the coffin of English colonial units. I believe that memory aids and rules of thumb that show the ease of any metric measures help in the ultimate metrication of the USA of all the people of the world.
In this case, I think that the easily remembered number sequence 1357 can help many students to know that the horizon is 3.57 kilometres away when you view from a height of 1 metre. >From the easily remembered 1357 we have established the basic rule for finding the distance to the horizon and we can use it for any other heights. Let's (for ease of calculation) consider 4 metres. >From a height of 4�m the horizon is about 7 kilometres (sqrt (4) x 3.57). But knowing this requires that we remember the 'constant' 3.57 that I think is readily remembered as part of the sequence 1357. Cheers, Pat Naughtin LCAMS Geelong, Australia on 2003-01-29 16.59, Brij Bhushan Vij at [EMAIL PROTECTED] wrote: > Hi Pat and friends: > I am not sure what is the aim? > What value for Pi was tried, the Chinese 355/113, which does not fix the > value for 'radian'. Did you also try the suggested Pi(π)=100000/31831. > This deviates from the best known value by 15.771x10^-6 percent; but fixes > Radian=57�.2958 or 57�17'44".88. > All value for Pi that I processed are displayed at: > http://the-light.com/cal/bbv_pi-radian.jpg > Regards, > Brij B. Vij TIME: to think Metric!<[EMAIL PROTECTED]> > <And Calendar too> > >> From: Pat Naughtin <[EMAIL PROTECTED]> >> Reply-To: [EMAIL PROTECTED] >> To: "U.S. Metric Association" <[EMAIL PROTECTED]> >> Subject: [USMA:24666] RE: Odd numbers 1357 >> Date: Wed, 29 Jan 2003 16:35:11 +1100 >> >> Thanks, Bill. >> >> It showed as the correct Greek letter on my screen before I sent it. >> >> I'll try workarounds in future. >> >> Cheers, >> >> Pat Naughtin LCAMS >> Geelong, Australia >> >> on 2003-01-29 09.49, Bill Potts at [EMAIL PROTECTED] wrote: >> >>> Pat: >>> >>> You can't show the real letter pi in a plain text message (you need HTML >>> formatting, using the symbol font for the pi). Your pi is coming out as >> the >>> single character for 1/4. >>> >>> Bill Potts, CMS >>> Roseville, CA >>> http://metric1.org [SI Navigator] >>> >>> >>> >>>> -----Original Message----- >>>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On >>>> Behalf Of Pat Naughtin >>>> Sent: Tuesday, January 28, 2003 13:58 >>>> To: U.S. Metric Association >>>> Subject: [USMA:24655] Odd numbers 1357 >>>> >>>> >>>> Dear Brij, >>>> >>>> A little while ago, you shared with us some fractional values of � that >> you >>>> had collected and I remarked that if you write the number 113355 with >> the >>>> last three digits as the numerator and the first three digits as the >>>> denominator then you get a very good approximation for �. >>>> >>>> 355/113 = 3.1415929 >>>> >>>> Now to get to the metric bit that might be relevant to this list. >>>> >>>> Last night I calculated the distance to the Earth's horizon from a >>>> height of >>>> 1�metre above the ground. The result came to 3.57�kilometres. >>>> >>>> 1�metre 3.57 kilometres >>>> >>>> That's an odd numbered pattern! >>>> >>>> Cheers, >>>> >>>> Pat Naughtin LCAMS >>>> Geelong, Australia >>>> >>> > > > _________________________________________________________________ > Help STOP SPAM with the new MSN 8 and get 2 months FREE* > http://join.msn.com/?page=features/junkmail >
