Pico projectors economist article

Great article in the economist around pico or micro projectors that will make current day projectors look like colossus(one of the first computers that filled a room) does to a modern day; Apple air or Toshiba R500 or other ultraportable

Nice article with a level of technical detail but not to much to put ley readers off!!
http://www.economist.com/search/displaystory.cfm?story_id=10789401