The color temperature of a light, measured in kelvins, is its most noticeable characteristic. A candle, at 1900 K, appears orange. Daylight, at 5500 K, is much whiter and bluer. A 5500-K bulb, however ...

“The new light has changed the character of the neighborhood at night,” said Gary, a Lex-Ham resident, during a meeting last winter. “There’s light intrusion in people’s homes, and a fixture on the ...

The commercialization of solid-state lighting based on LEDs could be aided by a new test procedure under development at the US National Institute for Standards and Technology (NIST) in Gaithersburg.

Diving torches are becoming increasingly better and more versatile. Not so long ago, flash units were the only sensible option for underwater photography, but now more and more video torches are ...

The Drummond MTL15 test lamp has a 1,000V CAT IV safety rating, and LED indication for AC and DC voltages ranging from 50 to 690V, “ensuring compliance with health ...