Re: .Simple SR question...

On Feb 2, 2:52 pm, asleep@xxxxxxxxxxxxx (Dark Energy) wrote:
On 2 Feb 2007 11:47:47 -0800, "PD" wrote:

You cannot have it both ways.
If you want experiment to determine what
is possible and what is possible, then
rely on experiment and not what you *think*
is possible and not possible.

PD

Tee hee, mighty cute, PD!

So show us the "experiment" whereby
light's one-way speed is invariant.

Can't, can ya!

I see you have difficulty remembering a lesson from day to day, let
alone one alias to another alias. Let me remind you of what I told you
just yesterday:
=================================
On Jan 31, 2:31 pm, asleep@xxxxxxxxxxxxx (Dark Energy) wrote:

On 30 Jan 2007 15:12:41 -0800, "PD" <TheDraperFam...@xxxxxxxxx> wrote:

Assuming it means to assert that it is the case,
regardless whether it is measured.

It cannot "be the case" until it is measured, Dummy.

Sorry, Brian, but that's not so. You are assuming that every
assertion
in physics is the result of a measurement, and that is simply not the
case. There is not a single measurement that demonstrates the
existence of a particle's probability wavefunction, and yet its
*assumed* existence accounts for experimental results very well. You
may wish it to be the case, but it just isn't. That's not how science
works.

Here is a definition of the word "postulate":
Something that is assumed to be true and that
is used as the basis of an argument or theory.

Precisely. Note the word "assumed". Here is another definition of
postulate, very closely related, which says it just a bit more
clearly:
"a proposition that is accepted as true in order to provide a basis
for logical reasoning"

Note also the definition of "assumption":
"The act of taking for granted, or supposing a thing without proof;
supposition; unwarrantable claim."

Now in your case, you simply will not entertain the supposition.
That's your choice of course, but it removes you from science or from
the bulk of logical thinking, for that matter.

In physics, "to be true" means "happens
experimentally."

No, that is not the case. Physics uses experimental evidence to
provide support for assumed postulates for which it has no direct
evidence. So does all of science, for that matter. Darwin postulated
that there was some mechanism for the passing of inherited traits,
though he had absolutely no experimental evidence of that mechanism,
which wasn't discovered until nearly a century later. This postulate
in no way diminishes the theory of evolution by natural selection,
and
in fact the theory was well confirmed even without direct evidence of
the mechanism itself.

Translation for Dummy:
If the second postulate of special relativity is to
be scientific, then it MUST pertain to the result of
some physical experiment where light's one-way speed
is found to be the SAME in all inertial reference frames.

Again, no. You are simply unaware of how science is done. I'm aware
that you would very much like it to be different than the way that it
is, but that simply will not make it so.

You can sputter and spout your doubletalk all you want,
but that won't change the simple facts about postulation.

Well, I think that a glance at the dictionary will help dispel your
misconceptions about "postulation", Brian.

===========================================

There. Does that help you remember?

PD


(And don't ask Dirty Dirk, cuz he
don't know either!)

|DE|

--
Posted via a free Usenet account fromhttp://www.teranews.com


.

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