Comment on “Neutron Interferometric Observation of Noncyclic Phase”

O ct 1 99 8 Comment on “ Neutron interferometric observation of noncyclic phase ”

Comment on “Observation of anticorrelation in incoherent

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the effect of classroom observation on eflteachers skills ans students outcomes

abstract the following study, in the first place, attempted to examine the effect of less experienced teachers participation in experienced teachers classes on their own skills and teaching methodology, in the second place, attempted to find out the role of teachers training in students achievements. for this purpose, 21 efl teachers were selected according to available sampling in kish l...

Comment on "Observation of Berry's topological phase by use of an optical fiber"

%e report the f~rst experimental verification of Berry's topological phase. The key element in the experiment was a single-mode, helica11y wound optica1 fiber, inside which a photon of a given helicity could be adiabatically transported around a closed path in momentum space. The experiment confirmed at the classical level that the angle of rotation of linearly polarized light in this fiber giv...

Interferometric phase-dispersion microscopy.

We describe a new scanning microscopy technique, phase-dispersion microscopy (PDM). The technique is based on measuring the phase difference between the fundamental and the second-harmonic light in a novel interferometer. PDM is highly sensitive to subtle refractive-index differences that are due to dispersion (differential optical path sensitivity, 5 nm). We apply PDM to measure minute amounts...