
Light Can Travel Backward in Time (Sort Of)
Light can be reflected not only in space but also in time—and researchers exploring such “time reflections” are finding a wealth of delightfully odd and useful effects
Anna Demming is a freelance science journalist and editor. She has a PhD from King's College London in physics, specifically nanophotonics and how light interacts with the very small. She began her editorial career working for Nature Publishing Group in Tokyo in 2006. She has since worked as an editor for Physics World and New Scientist. Publications she has contributed to on a freelance basis include The Guardian, New Scientist, Chemistry World, and Physics World, among others. She loves all science generally, but particularly materials science and physics, such as quantum physics and condensed matter.

Light Can Travel Backward in Time (Sort Of)
Light can be reflected not only in space but also in time—and researchers exploring such “time reflections” are finding a wealth of delightfully odd and useful effects

Scientists Create ‘Slits in Time’ in Mind-Bending Physics Experiment
Researchers have replicated the classic double-slit experiment using lasers. But their slits are in time, not space