| dynamic principle of measurement -
04-14-2006, 12:53 PM
Julian Schwinger said: A measurement is a physical operation in space and in time. The properties of a system are described in relation to measurements at a given time, and no value of the time is intrinsically distinguished from another by the results of measurements on an isolated physical system. See Julian Schwinger, Quantum Kinematics and Dynamics, page 73, Perseus Publishing, Cambridge, MA, 1991.
Is he talking about temporal independence?
Time independence: [∂E(g)]²=[∂F(a)×∂r(a)]·[∂F(b)×∂r(b)] and Mass independence: ¶a(t)·¶r(t)=c²
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