When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Much like Darwin’s natural selection, the world of lighting occasionally introduces new ...

Everyday experience tells us that light reflected from a perfectly flat mirror will give us the correct image without any deformation. Interestingly, this is not the case when the light field itself ...

Congratulations on noticing an effect called superluminal expansion, a phenomenon we see in a light echo. The echo appears to us to expand at many times the speed of light, seemingly violating the ...

White light interferometry (WLI) is a contact-free optical method for measuring surface height. It uses the phase difference between the light reflected off a reference mirror and the target sample to ...

A research team has developed a new way to measure and predict how plant leaves scatter and reflect light, revealing that ...