In their experiment, a powerful green laser beam passed through a ruby crystal, locally altering its response to lateral blue light. The result: a visibly darker region, akin to the shadow of a ...

Or worse, you may get a product with unwanted bugs features, like some green lasers that also emit strongly in the infrared wavelengths. Sure, getting a free death ray in addition to your green ...

When the green laser interacted with the ruby, it altered the crystal’s optical properties, increasing its absorption of the blue light and casting a visible shadow in the shape of the green laser.

A new study confirms that wild baboons do not recognize themselves in mirrors, reinforcing previous research on monkey ...