Re: Coulomb's constant is a CGS kludge

From: jahn (susysewnshow_at_yahoo.com.au)
Date: 03/04/05 

Date: Fri, 4 Mar 2005 06:03:25 -0500

"FrediFizzx" <fredifizzx@hotmail.com> wrote in message news:38qhnuF5pp6onU1@individual.net...
> "Ken S. Tucker" <dynamics@vianet.on.ca> wrote in message
> news:1109848478.784609.200150@z14g2000cwz.googlegroups.com...
> | FrediFizzx wrote:
> | > "Bilge" <dubious@radioactivex.lebesque-al.net> wrote in message
> | > news:slrnd2bd9r.4ft.dubious@radioactivex.lebesque-al.net...
> | > | John C. Polasek:
> | > |
> | > | >Check it out: H = E/Z.
> | > |
> | > | Dunce.
> | > |
> | > | Z = sqrt(mu_0/epsilon_0)
> | > |
> | > | \mu_0\epsilon_0 = 1/c^2
> | > |
> | > | Z = \mu_0 c
> | > |
> | > | mu_0 c H = E
> | > |
> | > | In vacuum, B = H, so mu_0 = 1 and E = cB.
> | >
> | > Something ain't right here because mu_0 doesn't ever equal 1 in cgs
> | or
> | > natural units.
> | >
> | > FrediFizzx
> |
> | Technically true, from what I've learned
> | the "index of refraction" is based on a
> | the product epsilon*mu, and this is simplified
> | to being "1" outside of a serious field.
> | In CGS charge is in electostatic units, (esu)
> | and then Coulomb force in CGS becomes,
> |
> | F = q1*q2/r12
> |
> | as Prucell explains, (past ch1 eq1).
> |
> | When E or B fields mix with matter, he redesignates
> | those to D and H, and then the "polarizability
> | tensor" needs to considered, and another vector "P".
> |
> | IMO, Polseks idea that changing units from SI to
> | CGS has any bearing on physics, as I think he
> | suggests in his current web-site, is ridiculous.
>
> Yeah, I have been trying to tell him that for quite some time now.
> Well, it does possibly have some "bearing". Spacetime "structure" is
> not so well hidden in SI like it is in cgs or natural units. Spacetime
> charge solves that problem quite neatly if I do say so myself. ;-) But
> "bearing" aside, any unit system that is consistent with empirical
> evidence definitely can't change the physics of nature. For some
> strange reason, proponents on both sides of the SI / cgs fence think
> that it can. I told John to give me one of his SI equations and I would
> show him how the physics doesn't change when converted to cgs. Either
> he missed the post or can't find an equation. Heck, I will use SI or
> cgs or natural units depending on which one works the easiest for the
> application involved.
>
> FrediFizzx
>

As usual, I am on the third side of a two sided issue.
You are saying you can take system which assumes
a space with magnetically operative entities,
homoenously distributed and equate it to a system
where the magnetically operative exist in matter.

That looks a bit more complex than converting
litres to gallons and centimeter to inches.

Sue...

Relevant Pages

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