Ultraviolet light has always sat at the edge of human perception, powerful yet invisible, more associated with sterilizing ...

Bats from Central and South American that live on the nectar from flowers can see ultraviolet light. This was discovered by York Winter, a German researcher at Munich University and the ...

First, some basics: Vision depends on light, which comes in a spectrum of wavelengths, ranging from very long to very short. Vertebrate eyes have two kinds of light receptors in the retina at the back ...

ALBUQUERQUE, N.M. - Researchers at Sandia National Laboratories developing ultraviolet (UV) light-emitting diodes (LEDs) recently demonstrated two deep UV semiconductor optical devices that set ...

A specific wavelength of ultraviolet (UV) light is not only extremely effective at killing the virus which causes COVID-19, but is also safer for use in public spaces, finds new University of Colorado ...

A specific wavelength of ultraviolet (UV) light is not only extremely effective at killing the virus which causes COVID-19, but is also safer for use in public spaces, finds new University of Colorado ...

Interference filters are frequently employed in transmissive configurations where the light passes through the filter to produce a specific effect (band-pass, long-pass, short-pass, among others).

Cataract surgery was revolutionised by the introduction of modern intraocular lenses in the late 1940’s. By the late 1960’s to 1970’s evidence had emerged that short-wavelength light caused ...