PhysicsQuantum to cosmos: Why scale is vital to our understanding of reality From the vastness of the universe to the infinitesimal particles that comprise it, extremes of scale defy comprehension – and present a problem for physicists seeking a unified theory of everything Features
PhysicsDoughnut-shaped swirls of laser light can be used to transmit images Ultra-fast pulses of laser light can be shaped into vortices similar to smoke rings – when chained together, they can carry enough information to transmit a simple image News