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

Trial Casts Shadow on Photodynamic Surgery for Bladder Cancer. ... more than white light-guided option "with no evidence of a difference in quality-adjusted life years," Heer and colleagues noted.

At first glance, the church appears to be floating in an unbroken cascade of light, devoid of traditional shadows. But this effect is not supernatural—it’s an architectural masterpiece. The ...

Nothing can defeat The Shadow except if there is light and nothing to block it. For then there can be no shadow. Mum please! MUM: ''Sorry I just really think I should wash those pants.'' ...