Read Science Fiction, Daniel? You're right on, but the derivation would probably rattle a few brains, including mine. Haven't done any calculus for going on nigh 35 years, been better off without it. I'm just a simple Engineering Technologist, the engineers can figure out that stuff, and I'll tell them that they're wrong by using common sense.
Pat -----Original Message----- From: Daniel Carrera [mailto:[EMAIL PROTECTED] Sent: 2008/05/21 02:15 To: [email protected] Subject: [social] Definition of metre in other planets It's very interesting that the definition of a metre the length of a 2-second pendulum would be so close to the definition of a metre as 10 millionth of the meridian along a quadrant. So I asked myself whether this coincidence is unique to the earth or if it would happen in other planets. It turns out that what is unique about the earth is its density. Any planet, whether big or small, will have the same close relationship between the two definitions of metre, as long as it has the same density as the Earth. In a big planet, the metre would be longer, but the two definitions of metre would still agree if the planet's density is right. I would provide a full formal derivation, but that might be off-topic :-) Daniel. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.23.21/1458 - Release Date: 08/05/21 07:21 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
