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Natural Science Forum / Physics / General Physics / July 2008Which is the most natural EM-units?
Which gives the most natural units ? A) epsilon0 = 1 or B) k=1/(4.PI.epsilon0)=1 A makes Maxwell's equations simple. B makes Coulombs Law simple. Which is the most natural? lundslakt...@yahoo.com skrev: > Which gives the most natural units ? > [quoted text clipped - 6 lines] > A makes Maxwell's equations simple. > B makes Coulombs Law simple. A makes Maxwell's equations simple. B makes the soloution too maxwell's equations simple. > Which is the most natural? On Jul 26, 10:49 pm, lundslakt...@yahoo.com wrote: > lundslakt...@yahoo.com skrev: > [quoted text clipped - 15 lines] > > - Show quoted text - Dhuh! Do either of you guys actuall understabd what unit system actually are? Also, define what you mean as "most natural". It's not a physics term with which I am familiar. No, I didn't think so. Harry C. p.s., While I am primarily a old New Jersey farmer, I do know a little about electromagnetics and classical mechanics. I remember the heated arguments between students on on the direction to approach a problem. Some agrued that the solution was basd upon the conservation of momenturm, and the opposite side argued that it was more related to the conservation of energy principles, both realized that by the time that they graduated, depending on the problem, both solution would afford a solution although one required more effort than the other. It largly depends on which model you choose. By graduation, everyone that graduated has learned this, but then 1/3 of the class never realizes these basic facts and switched from phyiscs to business, communications, or marketing. Harry C. >Which gives the most natural units ? Both Eq. 1 and 2 are held true in the cgs system. >A) epsilon0 = 1 In the defective cgs system this produces the tautological equation D = E Clearly, no basis exists for rejecting my improved equation: D = E = F :>) >or > >B) k=1/(4.PI.epsilon0)=1 k is a self-contradiction. In your Eq. 1, cgs has emasculated epsilon0 (=1). But this results in bastardized cgs units. So when you try to calculate force between charges, you have to drag in k, Coulomb's alleged constant, that contains epsilon, which was already written off in Eq. 1 SI or MKS units are the most natural. Use them. Everybody knows what an ampere is but nobody knows what an abampere is. Similarly with a volt and statvolt. >A makes Maxwell's equations simple. >B makes Coulombs Law simple. > >Which is the most natural? John Polasek On Jul 26, 10:03 pm, lundslakt...@yahoo.com wrote: > Which gives the most natural units ? > [quoted text clipped - 8 lines] > > Which is the most natural? Nature never reads Maxwell's equations. :o) http://en.wikipedia.org/wiki/Multiple_integral#Some_practical_applications Sue... |
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