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Have engineers used the einsteins theories to put satellites into orbit?

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  • 03-07-2015 4:55pm
    #1
    euser1984
    Registered Users Posts: 1,977 ✭✭✭


    Space time in particular.

    Have questions been answered that confused engineers when the concept of dark energy was discovered?

    Thanks.


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    #2
    Eugene Norman
    Closed Accounts Posts: 5,191 ✭✭✭Eugene Norman


    euser1984 wrote: »
    Space time in particular.

    Have questions been answered that confused engineers when the concept of dark energy was discovered?

    Thanks.

    Einsteins equations are used to correct for GPS anomalies. Both special and general relativity.

    It doesn't affect the launch of satellites. I don't think dark energy has much to do with it.

    http://physics.stackexchange.com/questions/1061/why-does-gps-depend-on-relativity


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    #3
    euser1984
    Registered Users Posts: 1,977 ✭✭✭euser1984


    Sorry I meant to put satellites into a circling orbit around earth using space-time type theory?

    Have satellites (in a way) somewhat proven that space time exists to cause gravitational pull?


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    #4
    Eugene Norman
    Closed Accounts Posts: 5,191 ✭✭✭Eugene Norman


    euser1984 wrote: »
    Sorry I meant to put satellites into a circling orbit around earth using space-time type theory?

    Have satellites (in a way) somewhat proven that space time exists to cause gravitational pull?

    Yes. But not to *put* them in space ( where velocities are too low to be relevent) but because of the time dilations caused by their relative velocities and lower gravitational pull when measuring GPS signals.


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    #5
    ps200306
    Registered Users Posts: 1,613 ✭✭✭ps200306


    euser1984 wrote: »
    Space time in particular.

    Have questions been answered that confused engineers when the concept of dark energy was discovered?

    Thanks.
    What does the question mean? All you need to put satellites in orbit is a lot of rocket fuel and Newton's third law.


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    #6
    RebelButtMunch
    Registered Users Posts: 2,384 ✭✭✭RebelButtMunch


    ps200306 wrote: »
    What does the question mean? All you need to put satellites in orbit is a lot of rocket fuel and Newton's third law.

    Or a very very long ladder.


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    #7
    euser1984
    Registered Users Posts: 1,977 ✭✭✭euser1984


    ps200306 wrote: »
    What does the question mean? All you need to put satellites in orbit is a lot of rocket fuel and Newton's third law.

    I'm not sure you understand my question. It doesn't matter anyway - I have my answer now.


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    #8
    FISMA.
    Registered Users Posts: 451 ✭✭FISMA.


    RebelButtMunch wrote: »
    Or a very very long ladder.

    Wouldn't you have to accelerate the top of the ladder to keep it from falling over?


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    #9
    ps200306
    Registered Users Posts: 1,613 ✭✭✭ps200306


    FISMA. wrote: »
    Wouldn't you have to accelerate the top of the ladder to keep it from falling over?
    No, the centripetal force on the ladder would be directed vertically. If you tried to climb the ladder, you'd have to accelerate eastwards but your angular momentum can be stolen from the earths rotation if the ladder has sufficient tensile strength. :pac:


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    #10
    euser1984
    Registered Users Posts: 1,977 ✭✭✭euser1984


    I reckon it might take too long to climb the ladder......


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    #11
    FISMA.
    Registered Users Posts: 451 ✭✭FISMA.


    ps200306 wrote: »
    No, the centripetal force on the ladder would be directed vertically.

    ???

    What?

    ???


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    #12
    ps200306
    Registered Users Posts: 1,613 ✭✭✭ps200306


    FISMA. wrote: »
    ???

    What?

    ???
    What what? :pac:


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