Share this on WhatsApp In 1797, English scientist Henry Cavendish measured the strength of gravity with a contraption made of lead spheres, wooden rods and wire. In the 21st century, scientists are doing something very similar with rather more sophisticated tools: atoms. Gravity might be an early subject in introductory physics classes, but that doesn’t mean scientists … Continue reading In a First, an ‘Atomic Fountain’ Has Measured the Curvature of Spacetime