Title: Do Parallel Universes Really Exist? | HowStuffWorks
Headings: Do Parallel Universes Really Exist?
Do Parallel Universes Really Exist?
Heisenberg Uncertainty Principle
Many Worlds Theory
Parallel Universes: Split or String?

Content: According to Bohr, when we observe a quantum object, we affect its behavior. Observation breaks an object's superposition and essentially forces the object to choose one state from its wave function. This theory accounts for why physicists have taken opposite measurements from the same quantum object: The object "chose" different states during different measurements. Bohr's interpretation was widely accepted, and still is by much of the quantum community. But lately, Everett's Many-Worlds theory has been getting some serious attention. Read the next page to find out how the Many-Worlds interpretation works. Advertisement
Many Worlds Theory
Young Hugh Everett agreed with much of what the highly respected physicist Niels Bohr had suggested about the quantum world. He agreed with the idea of superposition, as well as with the notion of wave functions. But Everett disagreed with Bohr in one vital respect.