What is an example of simultaneity?
For example, a car crash in London and another in New York appearing to happen at the same time to an observer on Earth, will appear to have occurred at slightly different times to an observer on an airplane flying between London and New York.
Is twin paradox possible?
In this supposed paradox, one of two twins travels at near the speed of light to a distant star and returns to the earth. Relativity dictates that when he comes back, he is younger than his identical twin brother. This paradox is discussed in many books but solved in very few.
Is Twin Paradox real Why Why not?
In both views there is no symmetry between the spacetime paths of the twins. Therefore, the twin paradox is not a paradox in the sense of a logical contradiction….Conclusion.
| Event | Earth (years) | Spaceship (years) |
|---|---|---|
| End of outgoing trip = Beginning of ingoing trip | 5 | 3 |
| Arrival | 10 | 6 |
How is the twin paradox resolved?
The so-called “twin paradox” is easily resolved by noting that there is a physically meaningful disinction between the experiences of the two twins during the trip. As it turns out, the result is that the traveling twin is younger upon return than the Earth-bound twin.
Does simultaneity exist?
No, there is no absolute agreement on simultaneity. Alpha Centauri is about three light years from us. We know that it existed three years ago because we can see it in the sky as it was, for us, three years ago.
Is time absolute or not?
The time and mass are absolute; they do not depend on the frame of reference. It is this shrinking or the change of geometry of a moving object in all directions that keeps the speed of light a constant relative to a frame of reference.
How time is an illusion?
According to theoretical physicist Carlo Rovelli, time is an illusion: our naive perception of its flow doesn’t correspond to physical reality. Indeed, as Rovelli argues in The Order of Time, much more is illusory, including Isaac Newton’s picture of a universally ticking clock.