Sirs:
On the same lines, the metre may have been defined originally as one forty
millionth of the polar >circumference of the earth but now it has a
universal definition in terms of the distance travelled in >a vacuum by
light in a certain fraction of a second. The current definition happens to
be very close >to the original but the connection between the standard unit
of length and the size of one >particular planet has been broken.
Considering Earth to be 'hypothetical Sphere of radius 6371 kilometre', the
Earth is 40030.1592786
kilometre, AND each degree works to 111.1948868853 kilometre. METRE New (m')
can be defined as: *1/10^5th of the degree*.
It is then NOT difficult to tie with 'Decimal Second (sd) & its equivalent
SI-atomic second'.
Brij Bhushan Vij
(Saturday, Kali 5106-W39-06)/D-016(Monday, 2006 January 16H14:51(decimal) ET
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From: Jon Saxton <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: "U.S. Metric Association" <[email protected]>
Subject: [USMA:35684] Re: decimal time
Date: Sun, 15 Jan 2006 19:48:50 -0500
Recent postings on this subject have raised some good points highlighting
the impracticality and/or futility of decimalising time.
SI is universal. It works anywhere in space and time: here in New York in
January 2006, on the summit of K2, at the bottom of the Mariana Trench, in
orbit, on the surface of the moon, in deep space and in the Andromeda
galaxy, yesterday, next week and next millenium.
From a universal perspective, the length of a second need not be tied to
the rotation of one particular planet. If we were invent a new "decimal"
second such that there are 100 000 or 240 000 seconds in a day then would
Mars colonists be justified inventing their own slightly longer version to
accommodate Mars's longer day? Would we have different "local" seconds on
Earth, Mars and Titan? Which second would be used on the moon or by
travellerSurely that is a silly idea yet it follows inevitiably from such
parochial thinking.
On the same lines, the metre may have been defined originally as one forty
millionth of the polar circumference of the earth but now it has a
universal definition in terms of the distance travelled in a vacuum by
light in a certain fraction of a second. The current definition happens to
be very close to the original but the connection between the standard unit
of length and the size of one particular planet has been broken.
