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Thread: Magnetism == Magnetic Gravity simulation?

  1. #1 Magnetism == Magnetic Gravity simulation? 
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    Hi community,
    I had a thought the other day about magnetism; it sprouted due to the fact that magnetism can affect mostly everything; (e.g levitating Frogs).
    I was thinking about the possibility of magnetic devices covering every square inch of a platform suspended in the air with the devices looking downward and with that the field; when activated, being strong enough to pull you upward just at the same pull of Earth's gravity; thus, potentially neutralizing gravity and you possibly floating mid air.
    Imagine for a second something like that were with you in free fall as you orbit the Earth, but instead of neutralizing gravity here on Earth's surface, it pulls you down; simulating gravity; but make sure not to have any metal items with you!

    Haven't been on the forum in a long time, so Hi everybody. o/

    Many thanks,


    With bravery and recognition that we are harbingers of our destiny and with a paragon of virtue.
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  3. #2  
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    Quote Originally Posted by Japith View Post
    I was thinking about the possibility of magnetic devices covering every square inch of a platform suspended in the air with the devices looking downward and with that the field; when activated, being strong enough to pull you upward just at the same pull of Earth's gravity; thus, potentially neutralizing gravity and you possibly floating mid air.
    Imagine for a second something like that were with you in free fall as you orbit the Earth, but instead of neutralizing gravity here on Earth's surface, it pulls you down; simulating gravity; but make sure not to have any metal items with you!
    Of course, in principle, you could use the force exerted by a magnet to counteract the force of gravity. As you say, magnetism affects all materials. However, non-ferromagnetic materials are only very weakly magnetic, so the fly in the ointment is one of practicality. The levitating frog you cite required a 16T magnet (that's 160,000 gauss, or about 400,000 times the flux density of the earth's magnetic field) to induce sufficient diamagnetic repulsion. And that was a tiny frog. Scaling up to a human would be out of the question, let alone a human on a platform.


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  4. #3  
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    Magnetic force drops off very quickly with distance unless the magnet is gigantic.
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    Genius Duck Moderator Dywyddyr's Avatar
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    Regardless of size the force drops off at the same rate:
    "[Dywyddyr] makes a grumpy bastard like me seem like a happy go lucky scamp" - PhDemon
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  6. #5  
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    Quote Originally Posted by Dywyddyr View Post
    Regardless of size the force drops off at the same rate:
    Force drops off at a rate dependent upon the change in magnetic field strength. The change in magnetic field strength is not always the same. For example, within a solenoid, it is almost constant along the axis of the solenoid.
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