Categories: Physics

Quantum Entanglement Explained

Confused by how particles can be in two places at once? Wondering how particles can instantly communicate with each other no matter what the distance? Quantum physics is a field of study that defies common sense at every turn, and quantum entanglement might lead the way in the defying common sense department. Entanglement is the unusual behavior of elementary particles where they become linked so that when something happens to one, something happens to the other; no matter how far apart they are. This bizarre behavior of particles that become inextricably linked together is what Einstein supposedly called “spooky action at a distance.”

This new video from PHD Comics provides a combination of live action and animation to try to explain entanglement.

“Not surprisingly, it was really hard to draw this video,” says animator Jorge Cham. “How do you depict something that has never existed before? And more importantly, do you draw alligators differently from crocodiles?”
Yes, that sentence actually makes sense when it comes to entanglement. And the advice at the end of the video from physicist Jeff Kimble is applicable to entanglement — and life in general — as well: “If you know what you’re doing, don’t do it…”

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at and and Instagram at and

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