Physics

Multiple-Prism Dispersion Theory is extended to enable evaluation of the overall outward and return pass dispersion of multiple-prism-grating combinations. It was given by Newton in…

Beam Divergence of a laser beam is a measure for how fast the beam expands far from the beam waist. Beams with very small divergence,…

Laser Linewidth it is the width of the power spectral density of the emitted electric field in terms of frequency, wavenumber or wavelength. The linewidth…

Atomic Coherence and image processing is a rapidly developing field in physics. Resonant atomic media provide a very convenient platform for proof-of-principle experiments and modelling…

Transactional Interpretation is the transaction describing a quantum event as an exchange of advanced and retarded waves, as implied by the work of Wheeler and…

Quantum Indeterminacy is usually mentioned when one is concerned with the predictability of events. It refers to the same fundamental physics phenomenon as does the…

Copenhagen Interpretation is the principle known as complementarity, which that the wave and particle nature of objects can be regarded as complementary aspects of a…

Afshar Experiment gives information about which of two paths a photon takes through the apparatus while simultaneously allowing interference between the two paths to be…

Time Dilation turns out that as an object moves with relativistic speeds a “strange” thing seems to happen to its time as observed by “us”…

Supplee’s Paradox is about whether a relativistic projectile, subject to uniform gravitational acceleration, would float or sink underwater. It arises when considering the buoyant force…

Ladder Paradox is a medieval knight riding a charger carrying a lance in place of the ladder, but honestly any long horizontal object will do…

Ehrenfest Paradox is the retardation in the transmission of centripetal accelerations. It is also plays an important role in time desynchronization. It has been deepened…