Ever wonder how a mirror works? If you want to find the path that light takes when reflecting off a surface, you could use Fermat's Principle. This states something like this: The path that light ...

To suppress unwanted reflections (stray light) inside optical equipment, simply choosing a "black material" is not ...

A team of researchers from Rensselaer Polytechnic Institute has created the world’s first material that reflects virtually no light. Reporting in the March issue of Nature Photonics, they describe an ...

Light propagation is usually reciprocal, meaning that the trajectory of light travelling in one direction is identical to that of light travelling in the opposite direction. Breaking reciprocity can ...

Reflections are the sole reason we’re able to see objects. An object that absorbs 100% of the light is invisible. Fortunately, we don’t encounter these in our daily lives. Any lighting-conscious ...

Mirrors such as those found in a bathroom tend to be made from a sheet of transparent glass or plastic and a layer of smooth, polished aluminium (or in older mirrors, silver). The reason why light ...

Discover the latest articles and news in related subjects. In this article, we report our recent research on broadband ultralow reflectivity black Si surfaces fabricated by laser micro/nanoprocessing.

Reflect Orbital is a California-based startup that aims to sell sunlight and energy after the sun has set. They're doing it ...