Re: SR theory is simplistic

"Sue..." <suzysewnshow@xxxxxxxxxxxx> wrote in
news:1173336083.056714.36630@xxxxxxxxxxxxxxxxxxxxxxxxxxx:

On Mar 7, 5:01 pm, bz <bz+...@xxxxxxxxxxxxxxxxxxxx> wrote:
"Sue..." <suzysewns...@xxxxxxxxxxxx> wrote
innews:1173298866.557631.101120@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

On Mar 7, 1:17 pm, bz <bz+...@xxxxxxxxxxxxxxxxxxxx> wrote:
[...]

I can be sure that the only remaining characteristics of 'an aether'
are 'it allows the propagation of EM waves at a velocity of c with
respect to any equipment that is used to measure the propagation of
those waves'.

I can be sure that nothing that I can conceive of that is 'physical'
has the necessary properties.

Cast you eyes across the room, take a deep breath and
try to conceive of a gaeseous dielectric that is harmless
if you inhale it.

But if air is necessary for the propagation of light, there is a
problem getting the light here from distant stars. There are some
'rather bar' spots' in between thar' and har'.

http://www-ssg.sr.unh.edu/ism/what1.html

There is a hydrogen atom every 10 cm. See if you
can charge a comb and move a pith ball at 10 cm
or just see how close to an old unshielded CRT
you can feel the screen tickle the hair on the back
of your hand. Better than 10 cm.

Let us imagine that due to the random motion of the atoms in space, at some
particular moment, there are NO particles within a particular cubic km
(except for neutrino's, of course).

What happens to the X-rays scheduled to travel through this region?
Do they have to wait until some atoms wander in, so they can hitch a ride
through this desert?

This may seem like an unlikely scene, but it has been estimated that if I
hold out a book for a long enough period of time, at some point in time all
the air molecules will be hitting the bottom and none the top, purely by
chance, and the book will rise. This will - it has been estimated - happen
less than once in a googol of years and more than once in a googolplex of
years. (from 'The Lore of Large Numbers')


I doubt that whatever you were thinking of when you wrote that
paragraph is anything like the aether that Maxwell, Lorentz, or any of
the 'modern' "there has just gotta be an ether 'cause I can't imagine
how light can get around without it" people conceive of either aether
or ether.

Perhaps if you can clarify your idea a bit, it will help.

It is Einsten's ether which in-word, if not by rigourous maths
establishes a farfield FoR for light but establishes no reference
for gravity or inertia.

Hm... in-word ... an interesting concept, in-deed!

Propagation in a dielectric medium

A vacuum does seem to qualify as a dielectric. At least I can measure
capacitance between two plates in 'a vacuum', but I can't quite get to 1
molecule very 10 cm.

http://farside.ph.utexas.edu/teaching/em/lectures/node98.html
http://en.wikipedia.org/wiki/Wave_impedance
http://en.wikipedia.org/wiki/Free_space

Why not claim the discovery of ISM instead of
flaunting absurd maths? :-)

Why not?

<<A Lorentz transformation or any other coordinate
transformation will convert electric or magnetic
fields into mixtures of electric and magnetic fields,
but no transformation mixes them with the
gravitational field. >>
http://www.aip.org/pt/vol-58/iss-11/p31.html
http://en.wikipedia.org/wiki/Gauge_fixing
http://arxiv.org/abs/physics/0204034

Thanks for the memories.



--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+spr@xxxxxxxxxxxxxxxxxxxx remove ch100-5 to avoid spam trap
.

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