A new experiment has demonstrated something that sounds physically impossible – light itself casting a shadow. It turns out that if you manipulate a laser just right, then hit it side-on with another ...

In the experiment, a high-power green laser passed through a ruby cube, illuminated from the side by a blue laser. The green laser increased the ruby’s absorption of the blue light, creating a darker ...

Light's shadow: Researchers showed that a laser beam can sometimes act like a solid object and cast a shadow that is visible to the naked eye. In the picture, the shadow appears as the horizontal line ...

Fifth graders at Dutch Lane Elementary School in Hicksville are bringing the classroom outside as part of a science experiment. During the space systems unit, teacher Stephanie Sullo engaged her ...

Uncovered by an Associated Press reporter 50 years ago, the Tuskegee experiments continue to cast a shadow on American race relations. “For 40 years the U.S. Public Health Service has conducted a ...