UMD team demonstrates swarm of photons that somersault in lockstep

College Park MD (SPX) Jun 04, 2021

Spinning or rotating objects are commonplace, from toy tops, fidget spinners, and figure skaters to water circling a drain, tornadoes, and hurricanes. In physics, there are two kinds of rotational motion: spin and orbital. Earth's motion in our solar system illustrates these; the daily 360-degree rotation of Earth around its own axis is spin rotation, while Earth's yearly trip around the s