An invisible band of radiation with wavelengths from 400 to 10 nm, ultraviolet (UV) light starts at the end of visible light and ends at the beginning of X-rays. The primary source of ultraviolet ...

Minutes matter when a surgeon is deciding how much tissue to remove. Yet for centuries, medical imaging has leaned on stains ...

Add Yahoo as a preferred source to see more of our stories on Google. WASHINGTON — President Trump’s mention Thursday of treating COVID-19 with ultraviolet light was part of a rambling digression that ...

For some time now, it’s been established that the primary route of SARS-CoV-2 transmission is airborne. Research suggests that contagious particles are released into the air and linger for several ...

The vacuum ultraviolet region is the area of the electromagnetic spectrum lying between X-rays and visible light. It is ...

WEST LAFAYETTE, Ind. -- You're at a softball game on a hot, sunny summer day. You left the sunscreen in the car, so you put the baby down under a tree, figuring the shade will protect her.

Donald Milton tests people for colds and flu in his lab at the University of Maryland. Among other experiments, his students use a “sneeze machine” to measure how far viruses fly out of the nose and ...

UC San Diego School of Medicine researchers have identified a possible link between inadequate exposure to ultraviolet-B light from the sun and an increased risk of colorectal cancer, especially as ...

Ultraviolet light systems have started to gain popularity as a way to clean large swathes of schools quickly and frequently. For example, according to a February EdWeek Reseach Center survey, 13 ...

A small study published in the journal Frontiers in Immunology on October 24, 2019, shows that exposure to ultraviolet B (UVB) light, which is commonly achieved through sunlight exposure, can trigger ...

Physicists at the University of Colorado Boulder have demonstrated a new kind of vacuum ultraviolet laser that is 100 to 1,000 times more efficient than existing technologies of its kind. The ...

Light-powered processes from hydrogen production to air purification could see a boost in performance under ambient light thanks to a new material system that can directly convert visible light into ...