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.
(1) These values can be compared with present measurements, i.e.
- mean equatorial radius: 6378 km
- mean polar radius: 6357 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
> http://http.hq.eso.org/outreach/spec-prog/aol/market/collaboration/erathostenes/
>
> 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
>
>
>
>
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