twin paradox animation 1




Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Mar 12, 2017

Twin Paradox animation. (Part one of two.) Light rays and twins are charted in absolute terms, free of the misleading space-time diagram.

The horizontal white lines represent the travelers, who carry photon clocks. Clock start/stop events: A, B and C. The fact that time differential is identical in both scenarios (animations 1 and 2) confirms that one cannot detect ones motion status with respect to the universe.

(None of the parties involved can assume anything about their actual state of motion; thus they cannot know whether they are participating in scenario 1 or 2. The blue circle in the opening diagram represents nothing but a point in space where a clock start/stop event occurs.)

To see PART TWO, click: https://www.youtube.com/watch?v=DjopW...

More detailed discussion: http://relativitytrail.com/twin-parad...

Space-time is a construct, dependent on Einstein's optional method of clock synchronization. The best one can do with a space-time argument in the context of the twin paradox is to note that one party, when changing inertial frames, will observe a jump in the reading of the clock time of the other party, using the 'lattice of clocks' method dictated by Einstein's particular clock synchronization.

But no such jump in anyone's aging (or on anyone's clock) actually occurs.

In contrast with the space-time argument: When the two parties check the status of each other's clock with the regular sending of radio pulses, they note an incrementally increasing time differential, first noted at the turn-around point. That real-world experiment reveals the real incremental increase of time differential. [William Geraint Vaughan Rosser (1991). Introductory Special Relativity, Taylor & Francis Inc. USA, pp. 67-68.]

In short:

Space-time is a construct, dependent on an optional clock synchronization method, and generates a false jump in time reading.

Space itself is not a construct, nor is time-keeping. And a real-world experiment reveals the real-world incremental increase in the time differential.

Why should we expect anything different? The 'stay-at-home' twin does not age many years in a twinkling just because some distant inbound astronaut starts his watch as he passes an outbound astronaut.

It is precisely ones motion with respect to the universe that dictates the actual clock rate, resulting in the actual time differential upon reuniting with the other party.

It has been known for 111 years that relativity in absolute terms encompasses Einstein's purely relative treatment, yet the public remains largely misinformed. No physical experiment can distinguish the absolute approach from the purely relative approach. [Wheeler, J., Taylor, E. (1992). Spacetime Physics, second edition. W. H. Freeman: New York, p. 88.]

Einstein's treatment of special relativity (and therefore identically the space-time model) is limited to assigning *measures* that parties of different inertial frames must make of each other's properties, for the satisfaction of Einstein's postulates of *measures*. It employs a hopelessly circular definition of inertial frame and cannot address the twin paradox.

In Spacetime & Electromagnetism, Lucas and Hodgson, using the space-time paradigm, wrestle with the twin paradox for fifteen pages, and claim no resolution.

In a footnote on page 73, they write: "Is it fair to give the Earth-bound twin the vertical world line? Does not that beg the question in his favour? Why not draw another diagram with his world line set at an angle to the vertical, and his lines of simultaneity correspondingly inclined (but at a contrary angle) to the horizontal?"

That alternative diagramming of the situation is identical to the consideration that one might just as well consider that it is the Earth, along with the entire cosmos, that changes inertial frames, in keeping with Einstein's purely relative approach. Of course, that simply makes the twin paradox unresolvable, as either party can then lay equal claim to being the party that ages the least. This is demonstration that one must consider the entirety of the cosmos, the imparter of inertial properties, to be the judge of the matter regarding actual motion.

Einstein himself regarded the time differential as "peculiar" and never attempted to explain it. The jump in the time reading upon changing inertial frames is simply built into Einstein's clock synchronization.

All the results of Einstein's relativity can be derived independent of Einstein's clock synchronization. His clock synchronization method can be diagrammed against a system at rest with respect to the totality of the universe. Also diagrammed, is how parties in different inertial frames assess each other's properties symmetrically, revealing precisely what is transpiring behind the scenes of Einstein's treatment.

Free pdf of book:

Luebeck, R. (2008, Sept 1). Relativity Trail. http://relativitytrail.com


When autoplay is enabled, a suggested video will automatically play next.

Up next

to add this to Watch Later

Add to

Loading playlists...