Technology

Someone sent us this link - sounds interesting:

• Researchers in Poland have developed a liquid that’s super-light and flexible... until you shoot a bullet at it that is. Upon impact, their specially designed 'shear-thickening fluid', or STF, turns into a solid that's reportedly not just more comfortable than Kevlar - the most widely used material in bulletproof armour - but also offers even better protection against bullets and other projectiles.
  
  Created by the Moratex Institute of Security Technologies, the liquid is what's known as a non-Newtonian fluid. Unlike regular Newtonian fluids like water, which only change their structure according to temperature or pressure fluctuations, non-Newtonian fluids change their viscosity under stress. In other words, they can quickly change from liquid to rock-hard solid when they're hit with something forceful, like a stray bullet, for example.
  
  Right now, Kevlar bulletproof vests do a good job of blocking bullets, but the close-fitting material that saves your life can also warp inwards up to four centimetres upon impact, which can greatly injure, and even kill, the wearer, the deputy director of Moratex, Marcin Struszczyk, told Reuters.
  
  "Thanks to the properties of the liquid, thanks to the proper formation of the insert, we eliminate one hundred percent of this threat because we have reduced the deflection from four centimetres to one centimetre," he added, referring to their new liquid.

Video here:

Might even be marketed before we retire.