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Thread: Speed, Time, Space

  1. #1 Speed, Time, Space 
    Forum Masters Degree SuperNatendo's Avatar
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    This is sort of both philosophical, but requires a lot of physics knowledge so I put it here.

    I'm going to jump right in to it:

    Lets say you are raised on a space-colony, and you are traveling from the stars at the core of the galaxy to the stars of the outer-rim at 298 000 000 m / s in relation to the speed you were traveling while you were closer to the center of the galaxy. You are given the task to travel from your space-colony to another identical space colony that had been on the exact opposite side of the black hole at the center of the galaxy, and had been going the same speed your colony had been going and left in the opposite direction at 298 000 000 m / s at the exact moment yours did.

    There are a few things I need to understand about such a scenario.

    First things first, you both think you are going 0% the speed of light, I have that much understood, but you ARE still perceiving that you are traveling 298 000 000 m / s away from the black hole right? Or is the distance and time also appearing to be different?


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  3. #2 Re: Speed, Time, Space 
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    Quote Originally Posted by SuperNatendo
    First things first, you both think you are going 0% the speed of light, I have that much understood, but you ARE still perceiving that you are traveling 298 000 000 m / s away from the black hole right? Or is the distance and time also appearing to be different?
    Yes, apart from the time dilation there is also the length contraction being a consequence of special relativity. This is, what the travelling observer is experiencing. From his point of view, the distances are much shorter. It's space-time, right? You can't have the one without the other.


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  4. #3 Re: Speed, Time, Space 
    Forum Masters Degree SuperNatendo's Avatar
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    Quote Originally Posted by SuperNatendo
    This is sort of both philosophical, but requires a lot of physics knowledge so I put it here.

    I'm going to jump right in to it:

    Lets say you are raised on a space-colony, and you are traveling from the stars at the core of the galaxy to the stars of the outer-rim at 298 000 000 m / s in relation to the speed you were traveling while you were closer to the center of the galaxy. You are given the task to travel from your space-colony to another identical space colony that had been on the exact opposite side of the black hole at the center of the galaxy, and had been going the same speed your colony had been going and left in the opposite direction at 298 000 000 m / s at the exact moment yours did.

    There are a few things I need to understand about such a scenario.

    First things first, you both think you are going 0% the speed of light, I have that much understood, but you ARE still perceiving that you are traveling 298 000 000 m / s away from the black hole right? Or is the distance and time also appearing to be different?
    So, since the distances are shorter, it actually appears that the two colonies first begin to get closer to each other before they begin to travel apart.

    Second Question,

    Lets say the Colonies were set to pulsate brightly once every second and the traveler who left the first colony left at 298 000 000 m / s and sends a message to the second colony using a laser. The message tells colony B to slow to 149 000 000 m/s. When the traveler sees the colonies, does he see his colony, colony A, pulsating faster or slower than colony B?
    "It's no wonder that truth is stranger than fiction. Fiction has to make sense." - Mark Twain
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  5. #4 Re: Speed, Time, Space 
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    Quote Originally Posted by SuperNatendo
    This is sort of both philosophical, but requires a lot of physics knowledge so I put it here.

    I'm going to jump right in to it:

    Lets say you are raised on a space-colony, and you are traveling from the stars at the core of the galaxy to the stars of the outer-rim at 298 000 000 m / s in relation to the speed you were traveling while you were closer to the center of the galaxy. You are given the task to travel from your space-colony to another identical space colony that had been on the exact opposite side of the black hole at the center of the galaxy, and had been going the same speed your colony had been going and left in the opposite direction at 298 000 000 m / s at the exact moment yours did.

    There are a few things I need to understand about such a scenario.

    First things first, you both think you are going 0% the speed of light, I have that much understood, but you ARE still perceiving that you are traveling 298 000 000 m / s away from the black hole right? Or is the distance and time also appearing to be different?

    Do you know of such a possibility you speak of, such a star system, and could it be observed?

    What if, and I apologise for getting off the point, there is a Universe and we are a star system, a "solar system", travelling away from the Universe at the speed of light? What would you see around you in your "primary" state of existence? What would the other stars look like? Would they look like a portrait? Would you see anything? OK, to make it easier, you are an event horizon star system travelling at or near the speed of light relative to the centre of the known universe ( ), well, the stars you would see would be as though they are frozen, that the light you catch from the other stars, from the other solar systems, are always caught in that moment you decided to go light speed, right?

    ......like a portrait, right?
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  6. #5  
    Forum Masters Degree SuperNatendo's Avatar
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    298 000 000 m / s is slower than the speed of light, and this doesn't answer my question. and even at this speed you are still going 0% the speed of light.
    "It's no wonder that truth is stranger than fiction. Fiction has to make sense." - Mark Twain
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  7. #6  
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    Quote Originally Posted by SuperNatendo
    298 000 000 m / s is slower than the speed of light, and this doesn't answer my question. and even at this speed you are still going 0% the speed of light.
    no that isn't 0% of the speed of light, but 0% of the energy required to reach the speed of light.
    when you have eliminated the impossible, whatever remains, however improbable, must be the truth
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  8. #7  
    Forum Masters Degree SuperNatendo's Avatar
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    No...Relativity states, that even when you are going 298 000 000 m / s, light is still traveling
    299 792 458 m / s faster than you, it has nothing to do with the amount of energy you have! No matter how much energy you put into your ship to go as fast as possible, you will still be going 0% the speed of light.

    When textbooks say "going 99% the speed of light" what they mean to say is in relation to the speed of the sun. This is a very misleading thing and the textbook writers really need to be more specific. When you are traveling that fast in relation to the speed of the sun, your perception of space-time changes making light still appear to be traveling the same speed it was when you were going the same speed as the sun.
    "It's no wonder that truth is stranger than fiction. Fiction has to make sense." - Mark Twain
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  9. #8 Re: Speed, Time, Space 
    Forum Masters Degree SuperNatendo's Avatar
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    Quote Originally Posted by SuperNatendo
    This is sort of both philosophical, but requires a lot of physics knowledge so I put it here.

    I'm going to jump right in to it:

    Lets say you are raised on a space-colony, and you are traveling from the stars at the core of the galaxy to the stars of the outer-rim at 298 000 000 m / s in relation to the speed you were traveling while you were closer to the center of the galaxy. You are given the task to travel from your space-colony to another identical space colony that had been on the exact opposite side of the black hole at the center of the galaxy, and had been going the same speed your colony had been going and left in the opposite direction at 298 000 000 m / s at the exact moment yours did.

    There are a few things I need to understand about such a scenario.

    First things first, you both think you are going 0% the speed of light, I have that much understood, but you ARE still perceiving that you are traveling 298 000 000 m / s away from the black hole right? Or is the distance and time also appearing to be different?

    So, since the distances are shorter, it actually appears that the two colonies first begin to get closer to each other before they begin to travel apart.
    Second Question,

    Lets say the Colonies were set to pulsate brightly once every second and the traveler who left the first colony left at 298 000 000 m / s and sends a message to the second colony using a laser. The message tells colony B to slow to 149 000 000 m/s. When the traveler sees the colonies, does he see his colony, colony A, pulsating faster or slower than colony B?
    "It's no wonder that truth is stranger than fiction. Fiction has to make sense." - Mark Twain
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