World Science Scholars

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  • I presume it’s like this: the velocity for both is the same, only the direction is opposite. The rocketobserver will say that the earth is moving away at speed v while the observer on earth will say that the rocket is moving away in opposite direction at speed v. However there also is a difference: the rocketobserver feels a force (accelleration) and the observer on earth doesnot.

    “The clock is Really ticking slower in the moving clock” : that is for the observer in rest, NOT for the “the person moving with the clock”. So even “if the person with the moving clock was travelling close to the speed of light” he wouldnot notice any slowing of his clock. If this person would be able to see the clock in rest then he would notice this clock running slower then his own clock.

    For me there is no need to see the derivations first as long as the formulas are derived at a later point in the course.
    I am enjoying the course very much: thanks!

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