Scratched contact lenses often mean an expensive replacement, even if the damage is minor.

A fossil crocodile that sat in a Spanish museum for over a century just gave up secrets no researcher had ever suspected were ...

Contact lenses are a great vision correction option for many, but if one of them gets damaged, there is little to do other ...

Extra sun protection is required when UV levels are very high (8-10) or extremely high (11+). Children are more sensitive to ...

Previously, the researchers created a hydrogel that repaired itself after being heated for several hours; however, this was ...

Two cups of warm water don't make one cup of boiling water. But in the quantum world, multiple low-energy photons can combine ...

A new solid-state material from Kyushu University turns visible light into high-energy UV at sunlight intensity. By attaching alkyl chains to the sp³ carbon atoms of an organic molecule, the ...

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 ...

An invisible band of radiation with wavelengths from 120 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 ...

Ultraviolet light has a long history as a disinfectant and the SARS-CoV-2 virus, which causes COVID-19, is readily rendered harmless by UV light. The question is how best to harness UV light to fight ...

Scientists have long known that ultraviolet light can kill pathogens on surfaces and in air and water. UV robots are used to disinfect empty hospital rooms, buses and trains; UV bulbs in HVAC systems ...