Purple is a combination of wavelengths from opposite extremes of the spectrum, which technically deosn’t make any sense, but ...

The first galaxies in the Universe were born enshrouded in a “foggy” gas, and could not be seen clearly until they had cleared up this fog. Using the James Webb Space Telescope, a team of researchers ...

Electromagnetic radiation is the general term for the more familiar light and radio waves, but also includes gamma rays, x rays, ultraviolet rays ... waves is the length or the wave or the “wavelength ...

“Your sunglasses must offer 100 per cent protection from the sun’s harmful ultraviolet (UV) rays. Buy one with a label of ...

A new eco-friendly coating could help protect them from those UV rays, and its active ingredient ... blocking 99.9% of UV light with a wavelength of up to 400 nanometers. That said, it still ...

CT scans are vital for effectively diagnosing problems with bones, muscles, organs and blood vessels. But overuse could be ...