We all have encountered force fields. Those impenetrable transparent domes that that protect us in a battle, reflecting bullets, bombs, and all forms of attack. And each one of us has probably thought that such a defence against attack is impossible. The truth is, these force fields are very much possible, one method arising from the formation of a Plasma Window and Carbon Nanotubes.
When a gas is heated to a high enough temperature, thereby creating a plasma, it can be molded and shaped in the form of a window or a sheet. Moreover, this "plasma window" can be used to separate a vacuum from normal air. If we took a plasma window and heated it to temperatures that could melt metal and put it over top of a layer of high-energy laser beams, these two curtains could successfully vaporize any weapon that would try to penetrate it. Put these two layers on top of a lattice made of "carbon nanotubes," which consist of a single carbon atom per tube, many times stronger than steel, and voila! Scientists could create a screen of enormous strength capable of repelling most objects. The screen would also be invisible, seeing as each carbon nanotube is atomic in size. Applications for a defence system such as this could burn like wild-fire through world markets. The only issue, 15 millimetres is the record length to date for a carbon nanotube.
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