Scientists in the University of Pensilvania have produced a material containing opal-like polymer crystals that produce different colors according to how hard they are hit.
They hope in future the crystals will be incorporated into head gear that provides an immediate indication of trauma after a violent impact.
The new technology is aimed at making ...
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The most Quoted formula of all time.
The Darth Vader of equations.
No it’s not a big, bad lightsaber wielder.
Just as Darth Vader, with his black mask and the strange voice, is the archetypal bad guy in popular culture, so this equation is the archetypal ...