Check out my 1st feature article on image sensors for Engadget Primed: http://www.engadget.com/2011/12/16/engadget-primed-why-your-cameras-sensor-size-matters/
Tons of info on the history of an image sensor, what it is, how cameras have evolved, and where they are today. You'll be an expert by the time you're done reading the piece. :)
I'll be writing more big pieces for Engadget- it's a great web magazine/ tech blog that receives anywhere from a million to ten million hits a day. I'm glad to be a part of their team!
Causes Sean Arbabi Supports
Sierra Club, The Nature Conservancy, The Trust for Public Land