Re: Will Somebody PleaseTell bz What an Inertial Frame is.

"Arthur Dent" <jp006t2227@xxxxxxxxxxxxxxxx> wrote in
news:1120334272.118942.112390@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

>
>
> bz wrote:
>> "Arthur Dent" <jp006t2227@xxxxxxxxxxxxxxxx> wrote in
>> news:1120291898.963571.290740@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:
>>
>> >> > Just speed up the light, then :-)
>> >>
>> >> kinda hard to do, at will, otherwise there would be no point in our
>> >> discussion.
>> >
>> > Actually it's as simple as bat and ball, at least in principle, but
>> > trying to do it in air is like playing tennis underwater.
>>
>> I am afraid that would be 'kinda a drag'. Photons don't seem to slow
>> down while passing through vacuum [and not much through air].
>
> Enough air and even brilliant sunshine turns red.

Because blue light is scattered by our atmosphere. [thats why the sky is
blue]

>> Once they do slow down for the media, they don't continue to lose
>> velocity, which they should do if BaT were valid.
>
> Whether you were right or wrong, it would have nothing to do with the
> speed of light in nothing.
> The ballistic theory of light isn't a friction theory.

The proposal was that light is slowed by passing near matter.

BaT light has no minimum velocity.
It would continue to slow until it stopped moving.

>> They certainly don't stop. Tennis balls do.
>
> The medium governs the speed of light both in the medium and relative
> to the medium. Move the medium at v and the speed of light is added to
> the speed of the medium, v, and becomes c/n+v.
> You've got three choices.
> 1) The speed of light is source dependent.
> 2) the speed of light is observer dependent.
> 3) the speed of light is medium dependent.

1) the speed of light is independent of source.
2) the speed of light is independent of observer.
3) the speed of light is medium dependent.
4) there is no medium in a vacuum.

> In MMX all three apply since source, medium and observer are all
> relatively at rest.

If there were an aether, the medium would not have been at rest.

> Take away the medium and you are down to two choices, the subjective
> speed of is light is c for you personally and speed of light is
> objectively source dependent.

SR/GR/EEP says "it ain't 'subjective'" and it is independent of source.

> We see red/blue shift, and there is no
> aether.

Agreed.

> The subjective speed of light c for the observer would mean the
> irrationality of time dilation. I send a beam of light from A to B, a
> distance of 1 light-year, reflect it back from B to A for a total time
> of 2 years, and in the meantime I buzz around in any direction, any
> speed and return once again to A. If my clock slowed as I did so I'd be
> forced to conclude the speed of light from A to B and back again was
> greater than c, which is a contradiction and irrational.

The only thing irrational is to think that you can do anything during the
experiment without changing its results.

If you leave your clock behind, when you come back and check the speed, it
will be correct. You can't take the clock with you.

> Performing an experiment with light IN THE VICINITY of matter is
> essentially the same as light in a medium, only the distance from the
> photon to the atom has changed.

All light is in the vicinity of matter. Especially if we perform an
experiment of any kind.


--
bz

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

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

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