On Wed, 2008-05-21 at 12:09 +0200, Daniel Carrera wrote: > Ian Lynch wrote: > > Live on the pole. Not only will you weigh the least, but the cold will > > require you to burn more calories (or should I say joules?) to keep > > warm. > > Actually, you weigh more at the poles.
Of yes, nearer the middle! However compared with the energy to keep warm I think that would be negligible. > First, you are further away from > the centre of the earth when you are on the equator. Second, earth's > rotation decreases your weight near the equator. I know that you are > thinking "there is less stuff beneath you at the poles" No, I know the physics just posted too quickly with the wrong train of thought :-) mg=GEm/rxr inverse square law. GE are constants m cancels. > but remember > that the ground that is not directly beneath you also exerts a > gravitational attraction. So the total amount of mass that's attracting > you is the same, but you are closer to the centre of mass. > > > > Second I believe is defined by atomic clocks these days and metre on > > wave length of radiation, mass - can't remember. > > Today, yes. Caesium atom at 0 Kelvin. I think it's the radiation > produced by an electron jump between two orbitals, but I'm not sure. > > Daniel. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > -- New QCA Accredited IT Qualifications www.theINGOTs.org You have received this email from the following company: The Learning Machine Limited, Reg Office, 36 Ashby Road, Tamworth, Staffordshire, B79 8AQ. Reg No: 05560797, Registered in England and Wales. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
