Describes the life of the man who invented a new lighthouse lens, capable of shining brighter, farther, and more efficiently than existing light sources, and hi

A Flash of Light is an intriguing book that starts at the beginning of time itself and then winds its way through a host of fascinating light related topics inc

The soft glow of a candle, the blink of a firefly, a burst of fireworks—light is everywhere in our world! Rhyming text and luminous illustrations follow four

Getting your Canon Speedlite to produce the light you need can be a real challenge. For those new to flash photography—or for anyone who has previously given