A rainbow looks like an object hanging in the sky, but it isn't one. It's an optical effect, and it exists only in the eyes ...

A team of researchers with members from Wuhan University and the University of Texas has created an artificial material that offers both negative refraction and no reflection. In their paper published ...

At the interface between two facets of an artificial crystal, sound waves can be transmitted in the opposite direction to that expected, and undergo no reflection. Such wave behaviour could have many ...

The law of reflection is introduced as we learn about the difference between specular and diffuse reflection and discover the difference between real and virtual images. Plan and carry out ...