Now you see it, now you don't: Hidden colours discovered by coincidence (w/video)

Our understanding of how light behaves has grown with the surprising discovery that colours can be seen in a new way. An example of a process called scattering, the effect occurs in some materials when light interference combines with strong electric fields.

An innovative method to tune lasers toward infrared wavelengths

Researchers have discovered a cost-effective way to tune the spectrum of a laser to the infrared.