To resolve the discrepancy between waves of probability and our commonsense notion of existence, Bohr and Heisenberg assumed that after a measurement is made by an outside observer, the wave function magically collapses, and the electron falls into a definitestatethat is, after looking at the tree, we see that it is truly standing. In other words, the process of observation determines the final state of the electron. Observation is vital to existence.
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About Michio Kaku
Michio Kaku was American theoretical physicist, futurist and author. Michio Kaku is an American theoretical physicist, science communicator, futurologist, and writer of popular science. He is a professor of theoretical physics at the City College of New York and the CUNY Graduate Center. Read more on Wikipedia →