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

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

In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat ...

The technique works because the green laser (wavelength 532 nanometers) changes the way the crystal responds to some other ...

high reliability laser products for use within many niche applications including machine vision, alignment, medical, measurement, scientific and military. A wide range of standard products are ...

Researchers at Nichia Corporation have demonstrated green InGaN-based lasers grown on c-plane sapphire, with lifetimes capable of supporting commercial applications. The demonstration of green ...

How about a TEA laser? Don’t have a high-voltage ... and power it with a homemade Wimshurst machine. TEA lasers give off ultraviolet light. In order to see the beam, [Steven] aims it through ...

The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of ...