Kensai7 writes: E Ink, the firm behind the monochrome displays on the Amazon Kindle and Sony Reader, launched its first colour ebook-reader display this week. Unlike LCDs that constantly draw power, electronic ink uses power to change the image – but not to display it – increasing battery life from hours to weeks. Electronic ink works by attracting black or white powders to the front of a clear pixel capsule.
If you push the "extra ice" button on the soft drink vending machine, you won't
get any ice. If you push the "no ice" button, you'll get ice, but no cup.