Jeff Liebermann wrote:
Try again...would you believe light as 38 miles per hour?

38 miles per hour is the speed of light in that medium
but not in a vacuum.

Quiz: How fast do the electrons flow in a copper conductor?
Hint: It's not the speed of light.

Of course not, compared to photons, electrons are massive,
capable of absorbing photons with ease.
--
73, Cecil http://www.w5dxp.com

On Thu, 18 Sep 2008 07:42:55 -0500, Cecil Moore
wrote:

Jeff Liebermann wrote:
Try again...would you believe light as 38 miles per hour?

38 miles per hour is the speed of light in that medium
but not in a vacuum.

You're still using vacuum tubes? Most of my equipment runs in a
medium, not in a vacuum.

Quiz: How fast do the electrons flow in a copper conductor?
Hint: It's not the speed of light.

Of course not, compared to photons, electrons are massive,
capable of absorbing photons with ease.

Well, to split hairs, electrons don't emit or absorb photons. The
energy or momentum from or to a photon is absorbed or emitted and
photons are either destroyed or created in the interaction in descrete
quanta levels. However, unless I heat my copper wire to
incandescence, it's is not going to emit or absorb any photons. I
just wanted to point out that the speed of propagation through a
medium is not the same as the speed of the particles involved in
conduction.




--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Jeff Liebermann wrote:
Well, to split hairs, electrons don't emit or absorb photons.

I was just quoting "QED", by Richard Feynman:

"-Action #1: A photon goes from place to place."
"-Action #2: An electron goes from place to place."
"-Action #3: An electron emits or absorbs a photon."

I'm sorry that Feynman was not precise enough for you. :-)
--
73, Cecil http://www.w5dxp.com