Physicists have experimentally reversed electromagnetic waves in time, confirming a theoretical prediction that has stood for decades. The process, known as time reflection, causes a wave to retrace ...

Sketch of the concept: a disordered medium (top) is made perfectly transmitting by placing a custom-made anti-reflection coating in front of it (bottom). (Courtesy: TU Wien) A new technique that ...

Light is a form of energy without it we cannot see things around us. Light enables us to see objects from which it comes or from which it is reflected. We detect light with our eyes. When light falls ...

When a ray of light that is travelling through a piece of glass strikes the interface between the glass and the air, it changes direction according to Snell’s law. If the angle of incidence is less ...

A mother and daughter's realization of the different reflection produced by a mirror, despite a visible item not being in front of the mirror, has left the internet confused. In a viral video, the ...