In the electron double-slit experiment with electrons, what happens when a detector is used to determine through which slit the electron actually passes?
A) The electron then acquires both a precise velocity and a precise position.
B) The pattern on the screen suddenly becomes an wave-interference pattern.
C) The electron suddenly jumps into a state of higher energy.
D) The pattern on the screen suddenly becomes a non-interference pattern.
E) Batman arrives.
D
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