"Whether light is a particle or a wave is a very old question," Riccardo Sapienza, a physicist at Imperial College London, told Live Science.As a species, we seem driven to understand the ...

Does light behave more like a particle, or like a wave? Today we know the surprising answer. Here's why it took so long to get there. When you purchase through links on our site, we may earn an ...

Light sometimes appears to be "dragged" by the motion of the medium through which it is traveling. This phenomenon, referred ...

Brain Matters Why falling asleep with the lights on is bad for your health. Light exposure before bedtime and even as we sleep can have adverse consequences, research shows.

The speed of light is 299,792,458 meters per second and that constant tells us much about cause and effect in the universe. ... In a wave-like picture, light is made of electromagnetic waves.

In an unusual physical reaction, gravity itself is turned into light that can flash after a star has died. We’ve all heard that light is a wave that can behave as a particle, but this is next ...

The emerging light-matter interactions are controlled by the twisted symmetry of the crystal lattice, enabling a large rotation of the incoming light polarization over a broad range of wavelengths.

Ever wondered how light slows down when passing through a material? Here we explore why the answer is not that straightforward.