Researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow, opening new possibilities for technologies that could use a laser beam to control ...

For the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue illuminating ...

Shadows have been integral to humanity’s exploration of light and its properties. From their depiction in ancient shadow puppetry to their role in groundbreaking scientific discoveries, shadows have ...