The equivalence principle is one of the corner stones of general relativity. Now physicists have used quantum mechanics to show how it fails.
Self-sufficient wheeled robots lock together to make a larger, flying robot.
The small flying robot could autonomously navigate tight spaces.
The investment would represent China's first ownership stake in the firm behind part of its home-grown Loongson processor.
A technique borrowed from acoustics could lead to a super-powerful amplifier of microwave radiation.
The company's Falcon 9 test vehicle has reached low earth orbit, a great feat for the commercial sector.
The U.S. still leads in high-performance computing capacity, but China is undergoing explosive growth.
Neural networks built for image recognition are well-suited for "seeing" sound.
New system uses haptics to allow designers to comb hair just like they would in real life.
Adding sensors to smartphones turns them into always-on recorders of medically significant information.