These are excerpts and elaborations from my book "The Nature of Consciousness"
|
The Measurement
Problem In
a 1926 conversation with Heisenberg,
Einstein pointed out that measurement is a physical
process itself and cannot be abstracted from the physical theory that requires
it (as it was assumed in classical Physics). It is the theory that decides what
the physicist can observe. A measurement is a lengthy and complex process that
leads from the quantity that is measured to the various elements of the
measuring apparatus to the observer. One must have a theory of what happens to
the measured quantity throughout this path. In order to measure a property of
a system via a certain apparatus, one must know the correct
laws governing the interaction between the system and the apparatus. When a
physicist observes a new phenomenon, s/he is forced to use the old theory
(because a new theory of the new phenomenon does not exist yet) but this
distorts the measurement. Einstein basically warned Heisenberg that Quantum
Physics needed a new way of performing measurements that could not be the same
as that of classical Physics. Back to the beginning of the chapter "The New Physics" | Back to the index of all chapters |
|
|
|
|