Acting as poetic records of light, the poems in Variations on Dawn and Dusk follow the sun as it warms, cools, colors, and shifts the space of Robert Irwin's untitled (dawn to dusk) in the desert of Marfa, TX. Built on the footprint of the town's old hospital, Irwin's permanent installation is a remarkable structure with walls, windows, and screens that both capture and are taken over by the sun's changing light. Through this deeply engaged ekphrasis,...

Power Supplies for LED Driving, Second Edition explores the wide use of light-emitting diodes due to their efficient use of power. The applications for power LEDs include traffic lights, street lamps, automotive lighting, architectural lights, theatre lighting, household light replacements, signage lighting (replacing neon strip lights and fluorescent tubes), LCD display backlighting, and many more. Powering (driving) these LED's is not always simple....

"Learn how natural light can help you design more flattering and appealing family portraits"--P. [4] of cover.

How is color created? What are primary colors and complementary colors and what happens when you mix or subtract them. What is a shadow and how are colored shadows made?

A little fish lost in the ocean must find a spark of light to show it the way home.