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 ...

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 ...

Progress in the LED lighting industry can best be measured in two separate metrics: pricing and efficiency. Pricing gets most of the attention, but so many factors affect it -- from the cost of ...

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 ...