energy

Your Future Camera May be Recharged Wirelessly Using an ‘Energy Router’

Wireless Internet is now commonplace, but one thing that's generally still wired is electricity. One day, however, you might be juicing up your gadgets with wireless energy routers instead of cables and battery chargers.

Energous Corporation is one company trying to make that vision a reality. It has developed a technology called WattUp that aims to change the way you think about how electronic devices are charged and powered.

The Only Known Photograph of Einstein Deriving his Famous E=mc2 Equation

At a public lecture in Pittsburgh in 1934, four hundred lucky students were privy to a lecture by Albert Einstein, in which the great man mathematically derived his famous mass-energy equivalence equation: E=mc2. What you see above is a photo from that lecture, and what is thought to be the only surviving photo that shows Einstein working on that derivation.