A rainbow reveals with colors what otherwise remains hidden: light is "refracted" by transparent matter, in this case water droplets. This same physical effect underlies many everyday technologies, ...

Abstract: An explicit time-domain finite-difference technique for modeling zero-thickness Huygens' metasurfaces based on generalized sheet transition conditions (GSTCs) is proposed and demonstrated ...

X-ray beams aren’t used just by doctors to see inside your body and tell whether you have a broken bone. More powerful beams made up of very short flashes of X-rays can help scientists peer into the ...

Refraction is the change in the direction of light due to a change in its speed as it enters a different medium. While the speed of light is constant in a vacuum, it decreases in denser materials, ...

With polarized light, you can make a stained glass window without glass. Using transparent tape and polarizing material, you can make and project beautifully colored patterns reminiscent of abstract ...

This story has been updated to clarify that the polar code is a widely used technology and not only owned by Huawei. A milestone for underwater communication has been achieved following testing of new ...

Have you ever sat on the bottom of a swimming pool and pondered your watery ceiling? Most of the surface is a sheet of light blue, and you can't see through it, even though the water is clear. But ...

Electromagnetism Notes PDF: Check this article to learn about electromagnetism, its key concepts, formulas and applications. Check and download PDF of Electromagnetism notes here. Electromagnetism: ...

Internal conical refraction is a striking optical phenomenon which arises when a beam of light is incident along one of the optic axes of a slab of transparent biaxial crystal. The beam propagates as ...

Describing electromagnetic field using scalar and vector gauge potentials represents one of the fundamental breakthroughs in classical electrodynamics, which is also at the heart of the celebrated ...