What do you mean by "shielding" it? If you are referring to "anti-gravity", that is currently considered pseudoscience, and is not in any way supported by physics.
Umm... correct me if I'm wrong but I don't think you can shield/stop/freeze/whatever gravity. Gravity has to do with the mass of planets and objects in space.
yep. A 'gravitation shield' would essentially be a something that could warp space time. Mass can warp space time but what you are asking for is something that would unwarp it. Are you really studying EE? Because you ask some pretty, um... strange questions, that should be pretty obvious to someone who has survived even the first year of engineering.:shrug:
Yes I'm studying EE but 30 years ago and then knowledge of physics were different than now. But I would be interested in the shield as the curvature of spacetime. Could you be more precise than it would work? It could be to use the electromagnetic field? Thank you for answers.
Papers by Droscher and Hauser, working off of Extended Heim Theory, claim that gravity may be generated, and possibly be shielded against by use of rotating magnetic fields and masses. (Yes, that's poorly stated, but since you need a Masters, or better in Physics or Mathematics to understand Heim's equations, that's the best I can do on short notice.)
jaiii: I don't think it's possible to create a gravity "shield" per se, but that it might be possible to contrive a field which counteracts gravity. Diamagnetic levitation is arguably an example of this, but is somewhat limited. For a more general case, I'd say that one looks to the "more fundamental" electromagnetic potential rather than the electromagnetic field. See this section of the wiki article on the Aharonov-Bohm effect.
Diamagnetic levitation arises because an electromagnetic effect resists the force of gravity, just as putting a brick on a table causes another kind of electromagnetic repulsion to arise between the parts of the table and brick which counteracts gravity. Diamagnetism might be less common place but its not anything more 'out there' than any other kind of EM repulsion, including the more mundane things like our muscles overcoming gravity or rocket exhaust. Explain, precisely and in detail, how this is relevant in any way other than "Here's another EM effect, which this time has lots of big words in it". How does using a vector potential rather than a field strength imply some kind of gravity cancelling or counter acting which the field strength doesn't? Remember, I want details, not just your usual arm flailing.
Superconducting magnets have a number of advantages over resistive electromagnets. They can achieve an order of magnitude stronger field than ordinary ferromagnetic-core electromagnets, which are limited to fields of around 2 T. The field is generally more stable, resulting in less noisy measurements. They can be smaller, and the area at the center of the magnet where the field is created is empty rather than being occupied by an iron core. Most importantly, for large magnets they can consume much less power. In the persistent state (above), the only power the magnet consumes is that needed for any refrigeration equipment to preserve the cryogenic temperature. Higher fields, however can be achieved with special cooled resistive electromagnets, as superconducting coils will enter the normal (non-superconducting) state (see quench, above) at high fields http://www.google.com/url?sa=t&sour...jpCSDQ&usg=AFQjCNElSt7RH_5Ey4dl31WMGJgSymj-hg
