Re: Twin Paradox Question


Russell wrote:
> Sue... wrote:
> > Russell wrote:
> > > Sue... wrote:
>
> [snip]
>
> > > > So... what do the Jovian moons appear to both observers
> > > > while all this hair is growing and greying?
> > >
> > > On the return trip, the youthful twin sees the moon zooming
> > > at high speed around Jupiter. It makes up all of the orbits
> > > that failed to be seen on the outbound trip. The total counts
> > > come out the same at the moment the twin gets home.
> >
> > So if we use Jupiter's moons to measure his reading speed
> > he reads fast departing but slow returning.
>
> If we use the *received* frequency of the moon's orbit, that is
> correct. Note, in our usual time coordinates this frequency is
> Doppler shifted, so just to be clear, let us say explicitly that
> we make *no* compensation for Doppler.
>
> We can do
> > the same for rate of hair growth.
>
> Yes indeed.
>
> > You just defeated your own argument.
>
> How so? Did you do the calculation?
Yeah the planet I was leaving was celebrating one birthday
for every two on the planet I was approaching. The
situation reversed on my return trip so everybody must have
had the number of birthdays.

> SR makes a *quantitative*
> prediction
Where ?
http://www.bartleby.com/173/

> and I didn't see any numbers from you. I think you are
> neglecting a very important detail: his outbound trip is very short
> in terms of received-moon-frequency-based time. That is, in your
> weird units, the time interval over which his hair grows fast and his
> pages turn quickly is *very* short compared to the time interval
> over which hair-growth and page-turn rates are slow. The two do
> not offset each other at all, and the overall effect is one of
> *slowness* in your weird units. As I said, he reads less than
> one chapter and he never has to visit the barber, unlike his
> brother (who btw knows it would be an abomination to speed-read
> Tolstoy).
>
> If you don't want to do the calculation,

I did the calculation.

Now show me Einstein's calculation.

Sue...


> please *do* read the FAQ
> on the Doppler explanation of the twin paradox. You are smart
> enough to infer from that page the result that SR would give for
> such a calculation, as transformed to your units.

.

Relevant Pages

  • Re: SR question
    ... > My twin is flying in his shuttle from the moon to the earth. ... > How long will I see him having this trip? ... could conceivably survive the brutal acceleration through ...
    (sci.physics.relativity)
  • Re: Proper Time v. Absolute Motion.
    ... And he returns to shake hands with Twin B. Question, ... > B together with the earth and the universe went on the trip. ... orignial inertial frame of reference and end in a differenent frame of ...
    (sci.physics.relativity)
  • Re: paradox of twin paradox
    ... acceleration to reverse his motion and return to earth. ... traveling twin, each of longer duration. ... but the age difference will be greater the longer the trip. ...
    (sci.physics.relativity)
  • Re: Illusion of C
    ... It's not an easy calculation. ... Gorund based time for trip: ... simple math is all that needed if you start from the ships speed. ...
    (rec.games.frp.gurps)
  • Re: Problems Saving Multiple Unbound Fields to a Table
    ... The exception to this would be a calculation done using factors that are not ... that you should have a Trip table with separate, ... Field in the RecordSource to which they are bound. ... one for each Calculated Control that you want to ...
    (comp.databases.ms-access)
Loading