Researchers used a ruby crystal and specific laser wavelengths to demonstrate that a laser beam could obstruct light and ...

In a new study, researchers used a ruby crystal and specific laser wavelengths to show that a laser beam can block light and ...

Laser beams have been shown to cast shadows, defying previous notions that light cannot block light. This phenomenon, ...

Light normally makes other objects cast shadows – but with a little help from a ruby, a beam of laser light can cast a shadow of its own. The crucial ingredient was a ruby cube. The researchers ...

Can light itself, perhaps from a laser, cast a shadow? It might seem like a trick question, but the answer to this is "yes." ...

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