Photographer and "mad scientist" Don Komarechka is back for a DPReview TV episode on ultraviolet light. Specifically, he explains how a modified camera-and-filter combination can reveal hidden ultraviolet patterns that are invisible to the human eye, but crucial for pollinators like bees.
Whenever something is bothering wet plate photographer Markus Hofstaetter, he captures his anxiety with striking, creative imagery. Lately, the idea of "division"—in ourselves, our societies, and our world—has been on his mind, so he set about capturing a "division" portrait. The twist: he didn't want to capture any visible light.
If you paid attention in high-school physics, you know that white light contains within it the rainbow of colors of the visible light spectrum: red, orange, yellow, green, blue and violet (and if you're Isaac Newton you throw Indigo in there for good measure).
Photographer Alexander Harding has a beautiful project titled "Visible Light" in which he turns light itself into the subject of photographs.