PhysicsThe physicist searching for quantum gravity in gravitational rainbows Claudia de Rham thinks that gravitons, hypothetical particles thought to carry gravity, have mass. If she’s right, we can expect to see “rainbows” in ripples in space-time Features
PhysicsA single atom could drive a piston in a quantum engine In a quantum engine, a single atom can emit radiation that bounces around a reflective cavity and creates enough pressure to push down a piston 51