Physics & Tech

The gravitational redshift is a simple consequence of Einstein's equivalence principle ("all bodies fall with the same acceleration independent of their composition") and was found by Einstein eight years before the full theory of…

In order to make transistors that operate using the spin of #electrons rather than their charge, it is necessary to find a way of switching spin #currents on and off. Furthermore, the lifetime of the spins should at least be equal to the…

A University of Maryland-led team of researchers has discovered a method to reliably synthesize and trap #trions that remain stable at room temperature. The research makes it possible to manipulate trions and study their fundamental…

Researchers at #Caltech have designed a way to levitate and propel objects using only light, by creating specific nanoscale patterning on the objects' surfaces.Though still theoretical, the work is a step toward developing a…

For the very first time, #NASA has captured the shockwaves of two supersonic jets interacting in mid-flight, and the result is so brilliant, even the researchers are amazed.The images feature two T-38s from the US Air Force, flying at…

We can probably all agree that charging cables are just the worst and that we'd love to have fewer of them in our lives. Now, a new invention might give us just that: engineers have developed a flexible device that harvests energy from…

Drone operators struggling to fly the multi-propeller device and take pictures simultaneously could soon have a much simpler method to steering flight.Bedrich Benes, a professor of #computer #graphics technology, and doctoral student…

#MIT engineers have come up with a conceptual design for a system to store #renewable energy, such as solar and wind power, and deliver that energy back into an electric grid on demand. The system may be designed to power a small city not…

A new computational approach, built on data-driven techniques, is making it possible to turn a simple 2-D sketching into a realistic 3-D shape, with little or no user input necessary. A global team of computer scientists from the University…

A cutting-edge material, inspired by nature, that can regulate its own temperature and could equally be used to treat burns and help space capsules withstand atmospheric forces is under development at the University of Nottingham.The…