2012
Lightbulbs that can change brightness and color with a cell phone command show flashes of design brilliance
by sbrothierregular lightbulb tends to come in one color and one brightness level. But now new LED (light-emitting diode) lightbulbs promise to become any color and any brightness at any time you like. And best of all, they can be controlled by the phone in your pocket.
2007
1
(2 marks)