The human race is always involved in war. Since the times of Alexander the Great, technological advancements have been utilized to maximize destruction and thus allow for more conquering. Since old Alex, humans have come a long way, becoming more and more efficient at killing each other with the help of technology. But how is technology helping protect those who serve to protect our freedom today? One of the newest soldier safety projects that the military is working on revolves around new types of vests called STF (Shear Thickening Fluid) body armor. The key to this new idea is the hard nano particles of silica suspended in the polyethelene glycol liquid. This solution is then used to soak fabric like kevlar which is sewn together into vests and helmet covers. This new armor is lighter that other armors and it is very flexible until the time of contact with a bullet or fragmentation from a grenade or IED when it becomes extremely rigid and impenetrable. Thanks to highly specialized machines and lab techniques, the synthesis of this new lifesaving compound is possible. Thanks technology! Read more about the advancement of STF at http://usmilitary.about.com/cs/armyweapons/a/liquidarmor.htm
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