These parameters explicitly define the phase velocity, the group velocity and the attenuation. Under the assumption that the difference between waveforms observed at a couple of stations is solely due ...

Group Delay Dispersion (GDD): A measure of how different frequency components of a pulse are delayed as they pass through a medium, affecting the pulse shape and duration. Gires-Tournois ...

Recently, a group of physicists measured a “negative” group delay in the propagation of an optical pulse in a highly dispersive medium 1. By reinterpreting the Drude-Lorentz model in a wave ...

The presence of gas in a magma produces a sharp decrease in the velocity of compressional waves and generates conditions in which the dispersion of the sound is significant at the frequencies usually ...

Regensburg Center for Ultrafast Nanoscopy (RUN) and Department of Physics, University of Regensburg, 93040 Regensburg, Germany ...

ABUJA, Jan 24 (Reuters) - A federal court in Nigeria has declared the Islamist Lakurawa group a terrorist organisation, a designation that allows the military to use maximum force against a group ...

While geopolitics in the Middle East, lower interest rates and November's U.S. elections fuelled market volatility, boosting client transactions on spread betting platforms, IG Group failed to ...

An uncompromising artist will receive an unorthodox memorial as David Lynch’s family has called for a “worldwide group meditation” on Monday in honor of the director. “David Lynch ...