Yes Pat Your observation > (40�074 + 39�942) � 2 = 40�008 km is interesting. The Earth's average circumference is 40,000 km assuming the fact that our planet is slightly oval in shape. So our metric planners have done a very job.
John: For your question that only radius is used in the webpage, yes I used the formula circumference = 2 * pi * r Madan --- Pat Naughtin <[EMAIL PROTECTED]> wrote: > Dear John, Madan, and All, > > Curiously, a simple mean circumference of the Earth > based on John's two > figures brings us preciously close to the original > 40�000 km of the original > designers of the metric system. > > (40�074 + 39�942) � 2 = 40�008 km > > Cheers, > > Pat Naughtin > CAMS - Certified Advanced Metrication Specialist > - United States Metric Association > ASM - Accredited Speaking Member > - National Speakers Association of Australia > Member, International Federation for Professional > Speakers > -- > > on 2001/12/24 05.54, kilopascal at > [EMAIL PROTECTED] wrote: > > > 2001-12-23 > > > > Did you calculate the circumference yourself? > Because I did not see it listed > > on the site, just the radius as copied below: > > > > Annotation: > > (1) These values can be compared with present > measurements, i.e. > > > > - mean equatorial radius: 6378 km > > - mean polar radius: 6357 km > > > > If I calculate the circumference using the C=2pr. > Thus 2p(6378) becomes 40 > > 074 km and 2p(6357) yields 39 942 km. These are > different then what you show. > > > > Is the circumference of the earth still equal to > exactly 40 000 km when > > measured along the same meridian used to > originally define the metre, extended > > all the way around the globe? > > > > John > > > > > > > > ----- Original Message ----- > > From: "M R" <[EMAIL PROTECTED]> > > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > > Sent: Sunday, 2001-12-23 09:48 > > Subject: [USMA:16783] Earth's circumference:Is > this correct > > > >> According to this website > >> > http://http.hq.eso.org/outreach/spec-prog/aol/market/collaboration/erathosten > >> es/ > >> > >> the circumference of the earth is > >> 40,090 km in equatorial (radius is 6378 km) & > >> 39,958 km in polar (radius is 6357 km). > >> > >> But this website says > >> > http://rainbow.ldeo.columbia.edu/courses/v1001/fermi.html > >> > >> it is 24,000 miles (which is 38,400 km) and they > claim > >> that each time zone has 1,000 miles. > >> > >> Which 1 is correct. > >> > >> Madan > >> > >> > >> > >> > >> > __________________________________________________ > >> Do You Yahoo!? > >> Send your FREE holiday greetings online! > >> http://greetings.yahoo.com > >> > __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com
