Re: Since k varies but not G suggests an Eather


guskz@xxxxxxxxxxx wrote:
Well according to Randy in another thread k in F= k Qq/r^2 remains the
constant permittivity of space

Yes.

REGARDLESS of which medium it's in,

Perhaps you've forgotten that "medium" is just an approximation,
and at the microscopic level a medium consists of isolated
atoms with pure vacuum between.

I
find that illogical (why would the velocity decrease due to
permittivity

Perhaps that's because you've forgotten that the idea of
"velocity decreasing" is just an approximation, and that what
happens at the microscopic level involves energy traveling
at c, the vacuum speed, in vacuum between isolated
atoms.

but not the force of a charge.....especially since the
main difference between mediums is the charge density)?

No, that is not the main difference between mediums. Mostly
our discussion of dielectric materials involves neutral
media, i.e. charge density = 0.

- Randy

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