- #1
Thecla
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- 10
In "Einstein's Moon" by F. David Peat there is a description of the EPR thought experiment,but I am confused by Bohr's response to Einstein given in Peat's book.
In the EPR as described by Peat, particle A and particle B move in opposite directions after the entangled particle (AB) separates.(Measurement of complementary variables, position and velocity may follow, but that is not my question).
If A and B are identical, B goes in one direction and A moves in the opposite direction with the same velocity
My question:
If I measure the velocity of particle B very precisely after they separate, please tell me which(if any) of these two statements is incorrect..
Statement #1 I will also know the velocity of particle A without measuring it with the same precision moving in the opposite direction.
Statement #2 I have not disturbed particle A in any way by measuring the velocity of particle B.
In the EPR as described by Peat, particle A and particle B move in opposite directions after the entangled particle (AB) separates.(Measurement of complementary variables, position and velocity may follow, but that is not my question).
If A and B are identical, B goes in one direction and A moves in the opposite direction with the same velocity
My question:
If I measure the velocity of particle B very precisely after they separate, please tell me which(if any) of these two statements is incorrect..
Statement #1 I will also know the velocity of particle A without measuring it with the same precision moving in the opposite direction.
Statement #2 I have not disturbed particle A in any way by measuring the velocity of particle B.