Certain molecules absorb ultraviolet light and re-radiate it at wavelengths we can see. Consequently, when exposed to “black lights” (UV light sources with little or no visible light ...

The result is a glowing light show that appears in waves, curtains or arcs across the sky. The Northern Lights are most visible near the Arctic Circle, but during times of high solar activity ...

Ultrafast photonics is the study of light and its interaction with matter ... This includes investigating processes that occur in atoms and molecules, such as the dynamics and correlations between ...