Many-worlds interpretation

The Many Worlds Interpretation of Quantum Mechanics is a theory about the Multiverse.

Origins

Max Planck said that electrons were more like waves than particles. This was called the Quantum Theory. Albert Einstein said that electrons were sometimes waves and sometimes particles. This is called wave–particle Duality. Niels Bohr said that when you see electrons, they’re either waves or particles but never both, but when you don’t see electrons, they’re both waves and particles at the same time. This is part of the Copenhagen interpretation of Quantum Theory. Einstein said Bohr was wrong because “God does not play dice with The Universe”. Erwin Schrödinger came up with Schrödinger's Cat to prove that Bohr was wrong. In the 1950s, Dr. Hugh Everett decided to answer the Schrödinger's cat argument with the idea that when there’s more than one possible thing that can happen, every one of them will happen at the same time, but each one will be in its own universe and nothing from one universe can go into another universe. This is like the idea of the multiverse but the difference is that it doesn’t just say that there are parts of the universe that we can’t see but that there are different universes.

In popular culture

The theory (sometimes) is talked about in television shows, movies, and other popular culture.

In the last episode of Scooby-Doo! Mystery Incorporated, Velma Dinkley wonders why she and her friends are now in a world without real monsters and then shouts 'Schrödinger's cat', so her friend Marcy asks, “What does the Many-Worlds interpretation of Quantum Mechanics, have to do with this?” and Velma says “everything”.

In The Big Bang Theory, Penny asks Sheldon Cooper to dance and Sheldon says that he believes in the Many-worlds interpretation of Quantum mechanics, which means that there is an Infinity of Parallel universes but he isn’t dancing in any of them. Penny asks, “Are you fun in any of them?” and Sheldon says, “In some of them, I’m a Clown made of Candy”.

In the television show The Flash, when people come from other Universes, Dr. Stein says that is possible because of the Many Worlds Interpretation.

In the movie Spider-Man: Far From Home, when Mysterio says he’s from another universes, Peter Parker wonders how that’s impossible when the Many-worlds interpretation says that something cannot leave its own universe.

And then in the next movie Spider-Man: No Way Home, different Spider-Men and different villains come from different dimensions into the main universe.

Other websites

Scooby Doo: Mystery Incorporated, Wikiquote

Big Bang Theory, The Gothowitz Deviation IMDB

“You’re Saying There’s a Multiverse?” Spider-Man: Far From Home (2019) Movie Clip HD

Spider-Man: Far From Home, Spider-Man: No Way Home