OUT of the blue
May 01, 2019
2 minutes
By Sally Hunwick
WHAT IS BLUE LIGHT?
lso known as high-energy visible (HEV) light, blue light is found in natural sunlight as well as our screens, electronic devices and LED lighting. Adjacent to UV light on the spectrum, blue light has a wavelength of between 400nm and 500nm, the most energy-dense of the visible
You’re reading a preview, subscribe to read more.
Start your free 30 days