Q: Given the toxicity of mercury, why in the world would light-bulb manufacturers have chosen to use this in the CFL light bulbs that replaced the incandescents? Soon after these new bulbs were ...

Even if you aren’t a tube aficionado, you can’t help but be mesmerized by the blue glow inside a mercury vapor rectifier when it operates. It looks less like early 20th century tech and more like ...

An ultraviolet (UV) LED in a surface-mount PLCC-2 package, the VLMU3100 by Vishay Intertechnology, serves as a solid-state replacement for mercury vapor lamps. Featuring a typical luminous intensity ...

Fluorescent lightbulbs use less energy than traditional incandescent bulbs, but many contain mercury, a neurotoxin that can accumulate in food sources and ultimately in our own tissues. Removing and ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

LEDs emitting light in the range of 200 nm to 400 nm are classified as UV LEDs. Within this range, there are three bands, UV-A with wavelengths from 300 nm to 400 nm, UV-B with wavelengths between 280 ...