Recent content by dwspacetime

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    B An issue about the twin paradox

    In space-time we need 4 coordinates to determine an exact location. If time for the twin are not the same they just can't be at the exact spot in space-time.
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    B An issue about the twin paradox

    This doesn't explain anything. Just like in a 3d world we need 3 coordinates to pin point an exact point, in a 4d world we need to 4 coordinates to do the samething. You will not meet your friend if you are in new York but I'm in Chicago even two of the three coordinates but one match. You will...
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    B An issue about the twin paradox

    For two people to meet in space-time we have to agree on location and time. For instance two have to make an appointment like this, I meet you at this address at 5pm tomorrow. All 4 coordinates have to match. If the traveling twin experiences less time, when the two finally meet again, they have...
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    Do you have any better recommendations? Everything is moving in speed of light is not in that book. It is what I think. Unless I find better explanation, inevitably I am trying to make sense myself.
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    Yes. It is pretty thorough which answered almost all my questions for now. It seems everything is moving in a speed of light..... The faster you move in space the slower in time...
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    I just watched something on YouTube about twin paradox which made me think. I was always curious about relativity but never had a chance to study it.. about a week ago i digged out the book I downloaded years ago "relativity for the questioning minds" but never had a chance to finish it. I'm...
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    that tells me that depending on which inertia frame you are in the sequence of events could be reversed. the reason for something to happen could be the result.
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    no matter which event happens first one of them is going to have 2.4 lys before 4 years why
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    Sorry I was just talking with myself. the event M is 4 lys away in T's frame should happen before the event M is 2.4 lys away. if that is the case then the event T 2.4 lys away happens before T is 4 lys away in M' frame. is that not weird. this must be one of the weird reality of spacetime
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    4 lys away should happen before 2.4 lys away but they seem switched somehow. if it is true the universe is wrong. sorry
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    this is interesting. but the sequence of events doesn't seem correct. that is weird
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    dont confuse yourself too much. again T and M are moving towards each other in whatever speed if numbers confuse you. in M's frame there should be one distance from T or two different distances? why dd you tell me in M's frame T is both 4 lys and 2.4 lys.
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    let me make it simple. basically I stated T and M are moving towards each other which is all i tell you. and you tell me T is 4 lys in M's frame and is also 2.4 lys in M's frame
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    I How Does Special Relativity Affect Perceived Distances Between Planets?

    sir what you did is "correct" after wrongfully made my two same statements stated in two different ways two different statements. the two statements are the exactly same although I switched two names. but for the same statements you answered in M is frame T is 4 lys in one answer but in the...
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