Re: The Nanometre Twin

Sue... says...

On Nov 8, 3:28 pm, stevendaryl3...@xxxxxxxxx (Daryl McCullough) wrote:

It's been explained to you many times that there is a *huge*
Doppler shift. Dennis observes a Doppler shift factor of 1/3
for images arriving from Sue. The factor of 1/3 means:

1. Sue sends her first signal on day 1 (according to her clock)

Staythome's clock is a light-clock with dielectric between the
mirrors.

Who says? We're talking about the predictions made by Special
Relativity. SR says that Sue can use any clock she likes, a
windup clock, an atomic clock, a light clock.

2. Dennis receives the first signal from Sue on day 3
(according to his clock).

Travler's clock is a light clock with dielectric *moving* between the
mirrors.

Who says?

3. Sue sends her second signal on day 2 (by her clock).
4. Dennis receives this signal on day 6 (by his clock).

Now he knows his clock is thrown off by the moving dielectric.
Can he switch to a Rolex?

Fine. It's a Rolex. The prediction of Special Relativity in
the case where Sue and Dennis are both wearing Rolexes is this:

1. Sue sends out her first signal when her Rolex shows one day
has passed since Dennis departed.

2. Dennis receives that signal when his Rolex shows that
3 days has passed since he and Sue departed.

So where are you getting the idea that there is no Doppler
shift?

You didn't specify a light clock that would respond
to motion through the dielectric and mask the
doppler effect so I compared the rates you gave
as tho the Traveler had a normal clock.

Well, you goofed up. Once again: We assume that as measured
in Sue's coordinate system, Dennis is traveling at 4/5
c in the x-direction. Sue sends out a light signal once
per day, according to her Rolex. Dennis sends out a light
signal once per day, according to his Rolex. The predictions
of Special Relativity for this situation are:

1. Sue's signals to Dennis will arrive once every 3 days,
according to Dennis' Rolex.

2. Dennis' signals to Sue will arrive once every 3 days,
according to Sue's Rolex.

You didn't show moving media will slow a light clock
but I'll stipulate that it does.

I'm not trying to prove the correctness of Special
Relativity. I'm working out the *consequences* of
Special Relativity. You claim that those consequences
are inconsistent. Fine. Prove it by giving a derivation.

You are very confused.

Indeed, and you intended to confuse.

That's a lie.

Names such as Stella and Terra
are customary in this sort of problem.

You're confused because I chose different names
for the twins? My gosh, you *are* easily confused.

I don't know what your beef was with Dennis McCarthy
bet please save your insults and games for him.

I didn't mention Dennis McCarthy. I said *you* are very
confused. You claimed that the traveling twin's clock
is slowed by a factor of 1/3. That's false. You claimed
that the traveling twin sees no Doppler shift. That's false.
You claimed that Special Relativity is inconsistent. That
is false.

In other words, you make many claims that are false.

In closing this

There is no evidence that the process of moving a
pair of mirrors through a dielectric has any
effect on a twins life or hair growth.

Well, Special Relativity doesn't say otherwise.
It doesn't say anything about a dielectric. It
says that (1) the laws of physics have the same form
in every inertial coordinate system, and (2) the
speed of light through vacuum always has speed
c as measured in any inertial coordinate system.

--
Daryl McCullough
Ithaca, NY

.

Relevant Pages

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