For the first time, astronomers have captured an image of the diffuse "cosmic web" of gas that stretches between galaxies. The structure, which contains most of the material in the universe, mirrors ...

Coherence properties of different light sources and how they affect the image quality of holographic display are investigated. Temporal coherence is related to the intrinsic spectrum bandwidth of the ...

Fundamentally, a microscope comprises two subsystems: an illumination system to illuminate the sample and an imaging system that produces a magnified image of the light that has interacted with the ...