Time-varying systems, materials with properties that change over time, have opened new possibilities for the experimental ...

In 1967 the Russian physicist Victor Veselago predicted the existence of a material with a negative index of refraction, which he termed “left-handed.” He concluded that in the presence of such a ...

Wave nature of light, mathematics of wave motion, electro-magnetic theory of light propagation, reflection and refraction, Fresnel coefficients, polarization, interference, Young's experiment, fringe ...

HYDRODYNAMICS: The equation of motion -- The equation of continuity -- The wave equation for a progressive wave with a rigid profile traveling at constant phase speed -- Solution of the wave equation ...

A new study led by DAI Qing’s team from the National Center for Nanoscience and Technology (NCNST) of the Chinese Academy of Sciences (CAS) and Javier Abajo from the Institute of Photonic Sciences ...

This review discusses the impact of non-Hermitian physics on optics, revealing new possibilities in wave control and addressing fundamental performance limits.