A group of researchers at NIST working with engineers from Colorado-based Scientech has developed a new approach to measuring laser power using a mirror and a scale. This method, which measures the ...

The force exerted by light, called the radiation pressure force, was first demonstrated a little more than 100 years ago. Radiation forces have been remarkably successful in manipulating the motion of ...

Tractor beams, a staple of science fiction, may be moving closer to science fact. In a paper published earlier this spring, physicists have proposed a structure that may enable light to pull objects.

The Office of Environmental Health and Safety removed a statement from its websiteabout the safety of radiation from Wi-Fi in June 2014 in response to activist pressure. The statement, which reflected ...

Prolonged exposure to low-dose radiation – like the type emitted by X-ray machines and CT scanners – can increase the risk of developing high blood pressure, a key contributor to heart disease and ...