I got this question from playing games like Halo and Borderlands (I know kinda dumb but raised a good question) in which the primary protection is an electric shield. Now I'm wondering if it would be possible to use energy to create a barrier in which physical objects either get disintegrated or deflected. Id imagine magnetism would come into play somewhere.
This kind of technology would be arguably the most useful invention because it would enable us to protect ourselves, not in war, but in situations that normal protection couldn't. Such as on spacecraft and rockets, common collisions and asteroids wouldn't be an issue. I would imagine the amount of protection, size, and duration would depend on the amount of energy available but if you had a system in which it's self propelling and generating more than it's using(such as a car batter and multiple alternator) then that wouldn't be an issue. Also I'd imagine the device would be small because the shield would appear and disappear with the addition and removal of the energy source.
So basically, is it theoretically possible to make a shield or barrier out of energy and if so, are we close or very far from this kind of breakthrough? thanks in advance