What is the story behind the objects that represent the British Museum’s largest-ever donation? And which are the best?

With the help of a ruby cube and two laser beams, researchers made one ray of light cast a shadow when illuminated by the ...

This could enable new tech for controlling light with light, opening doors to advanced fabrication, imaging, and illumination ...

Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain ...

Shadows are a natural consequence of opaque walls in an illuminated Universe. Light shines; photons travel until they hit an ...

When the green laser enters the ruby, it locally changes the material response to the blue wavelength. The green laser acts like an ordinary object while the blue laser acts like illumination. The ...

A new experiment has demonstrated something that sounds physically impossible – light itself casting a shadow. It turns out ...