For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays - without the ...

Scientists have found a way to achieve negative refraction—where light bends the "wrong" way—using carefully arranged atomic arrays instead of engineered metamaterials. This breakthrough has enormous ...

A ray diagram showing refraction at the boundary between air and glass Refraction can cause optical illusions as the light waves appear ... such as water, it slows down and wavelength decreases.

It is refraction that makes some objects appear to bend when they are viewed through water, like the straw shown here. If the light hits the surface of a glass block at an angle, this change in ...

Light bends when travelling through a concentration gradient of sugar in water. The top layer of liquid is pure water ... In the tank, from top to bottom, the index of refraction is increasing, as in ...