🚀 go-pugleaf

"Indestructible Truth Holder" <nospam@mindspring.com> wrote in message
news:b23mg6$g5q$1@slb3.atl.mindspring.net...
> "Mark Folsom" <folsomman@prodigy.com> wrote in message
> news:v48kpl4rfpokdb@corp.supernews.com...
> > "Spaceman" <agentspaceman@aol.combination> wrote in message
> > news:NjY0a.22719$SD6.1159@sccrnsc03...
> > > <LOL>
> > > I Got you!
> > > You Lose!
> > > HA HA!.
> >
> > Wow, what a childish idiot!
>
> I agree with you about his behavior, which is unfortunate because he
raises
> valid questions.  Your behavior has left a little to be desired too, with
> your rash assumptions than anybody criticizing the current theories is a
> Creationist.

The idea that the speed of light changes over time is a favorite of some
young earth creationists.  I don't notice you denying that you are one.

>
> > > > Please cite your evidence that the speed of light in water changes
> with
> > > > time, all else remaining equal.
> > >
> > > changes with time?
> > > I never said such.
> >
> > Then why did you inject your bullshit into this exchange, which was
about
> > the change of the speed of light over time.
>
> Actually, I challenged the assumption the speed of light "is and always
has
> been" constant, which includes time but could also include other factors.

Under what circumstances do you think lightspeed changes in a vacuum?

>
> > > I said the speed of light is less in water than in air.
> >
> > Actually, I don't think you did in that last post.
>
> He did say the speed of light changes in water, and I doubt he was
implying
> it's faster than in air.
>
> > > and that the relative speeds create differences in wavelengths.
> > > HENCE
> > > no "constant" c to all.
> >
> > In a vacuum, it is.
>
> This is one of the fudge factors I was talking about.  Space isn't a
uniform
> vacuum, there are clouds of primitive gases, subatomic particles, even
dust
> and matter floating around between stars and planets.

How much do you think it varies in the dust and gas clouds found between
stars and planets?  Do you know what the speed of light is in the thick gas
of Earth's atmosphere?

>
> > > > You can measure the speed of light by watching the orbits of the
moons
> > > > of Jupiter.  Is that far enough out there?
> > >
> > > No,
> > > that is not "measuring light's speed"
> > > that is "guessing" using c as lightspeed and using
> > > distances that were measured by using c.
> >
> > Tell me, please, how c was used in measuring distances to the moons of
> > Jupiter.
>
> Isn't c used to calculate the astrononical unit?

No.  The astronomical unit is the distance from the sun to the Earth.  I
don't remember the exact history, but I think it was derived just from
orbital considerations, without reference to c.


Mark Folsom