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Light

Twisting puts the brakes on light in a vacuum

David Szondy, March 27, 2016
The speed of light in a vacuum is a universal constant, but, according to scientists at the University of Ottawa, not that constant. A team of researchers led by assistant professor Ebrahim Karimi has discovered that twisted light traveling through a vacuum moves slower than the speed set by Einstein's theory of relativity, which has implications for quantum computing and communications|

This Lamp Will Burn All Night Powered By Nothing More Than Salt Water

Solar polar has officially been outdone. This innovative lamp designed by SALt (Sustainable Alternative Lighting), a company based out of the Philippines, literally provides hours of light – and from just one glass of water and two spoons of salt.