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
I like new tool boxes!
https://web.archive.org/web/20231207150304/https://www.scientificamerican.com/article/light-can-travel-backward-in-time-sort-of/