It is important to understand the basis of examination in terms of measure, requires us in this case to be able to see in a certain spectrum.
Heisenberg originally formulated his ideas in terms of a relationship between the precision of a measurement and the disturbance it must create. Although this latter relationship is not rigorously proven, it is commonly believed (and taught) as an aspect of the broader uncertainty principle. Here, we experimentally observe a violation of Heisenberg’s “measurement-disturbance relationship”, using weak measurements to characterize a quantum system before and after it interacts with a measurement apparatus. http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.100404