The US Military is currently developing a plasma shield capable of disrupting projectiles from penetrating it. A short intense laser ignites gas and creates a ball of plasma. A second laser generates a supersonic shockwave within the plasma to generate an intense flash and loud bag. Repeat this process in rapid succession in mere milliseconds and you have yourself a good old fashioned energy shield.
Now of course when I say old fashioned, I mean it! In the Star Trek universe, shields are created by amassing a large concentration of gravitons to generate a barrier. Unfortunately current science has failed to prove the existence of gravitons so until then, the plasma shield is almost a Star Trek shield.
via Aurum Newtech
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