ABSTRACT
W. E. Lamb wrote several papers on the measurement problem in quantum mechanics. Classically, the process of a measurement is relatively straightforward. The objects measured are macroscopic and they can be measured repeatedly without being disturbed in a nondestructive process. For example, using a meter rule, or a metric caliper, one can measure repeatedly the length of an object thus obtaining a series of measurements that can lead to an average dimension and a corresponding standard of deviation. According to Lamb, quantum mechanics can be extended to measurements on a “rather large and otherwise macroscopic system”. He goes on to explain that the detector is treated quantum mechanically, in other words the process of the measurement that in case refers directly to the interferometric probability distribution arising from either the propagation of single photons or an ensemble of indistinguishable photons.
