Up Close With The Next Big Home Commodity: LED Lighting

Editor's note: Sal Cangeloso is the editor of Geek.com and wrote a new book on an odd topic. It's called LED Lighting: A Primer to Lighting the Future and it focuses on the upcoming explosion in LED manufacturing, offering a basic understanding of the technology and an interesting look at the history of LED lights. You can buy LED Lighting: A Primer to Lighting the Future here and the first three commenters below get a copy of the book. Here is an excerpt from the first chapter of the book discussing the growth of lighting from old-timey incandescents to modern LED technology. The incandescent bulb is a good place to start with any talk about lighting. This design has had tremendous longevity (over 130 years) and it makes for a cheap, versatile bulb. Unfortunately, this design is also power-hungry, inefficient, short-lived?(with some exceptions), and fragile. They produce a minimum amount of lumens-per-watt, though they?ve made appreciable gains over the years, and are highly sensitive to power conditions. For example, a 5% reduction in voltage could double the life of a bulb while only decreasing light output?by 20%.

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