According to the World Meteorological Organization, a photometer is “an optical phenomenon produced by the reflection, refraction, diffraction or interference of light from the sun or the moon.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Reflection, refraction, diffraction, oh my! Dive into the wonderful ...

Most people know that light travels in a straight line unless something acts upon it to change its direction. The three most common methods of changing the direction of light are refraction, ...

Time-varying systems, materials with properties that change over time, have opened new possibilities for the experimental manipulation of waves. Contrarily to static systems, which exhibit the same ...