UV (ultra-violet) LEDs can produce eye-catching effects when their light is allowed to interfere with certain colours, particularly with reflected light under near-dark conditions. Also try shining ...

Asian paper wasp nests take on a new verdant glow under ultraviolet light. Bernd Schöllhorn and Serge Berthier Scientist Bernd Schöllhorn was exploring a forest in northern Vietnam when he spotted ...

While trekking through the tropical forests of northern Vietnam, scientists unexpectedly discovered wasp nests that glow fluorescent green under ultraviolet light. The nests, which look like a cluster ...

Muyshondt makes totally over-engineered, no-expense-spared pocket flashlights for camping and other uses, but this one uses an ultraviolet LED made especially for watches — and, more specifically, ...

You’re unlikely to see one in the temperate rainforests of North Wales. But should you stumble upon a polar bear and shine a UV light on it, its fur will fluoresce a trippy mix of reds, oranges or ...