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Spacetime invisibility cloaks can hide entire events inside temporal voids

Spacetime invisibility cloaks can hide entire events inside temporal voids
SExpand Invisibility cloaks are taking baby steps from science fiction to science fact. But there's an even stranger and more incredible possibility - an invisibility cloak that works in both space and time, shielding whole events from history itself. The basic idea is surprisingly simple. We see things because our eyes are able to interpret information from visible light. That light travels at, obviously enough, the speed of light, which means we see things once light has traveled from them to our eyes.

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Physics and Astronomy Glossary Technical terms of science have very specific meanings. Standard dictionaries are not always the best source of useful and correct definitions of them. This glossary is not intended to be complete.

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