By going a little further down the energy tech value chain and viewing the nascent LED industry through this familiar lens, they can walk in and let the lights come on.

FORBES: A New Source of Green Energy: LEDs

The car detects the proximity of the key and, just as you're about to reach the door, the lights come on and the door handles extend from their normally retracted positions.

ENGADGET: blogger-avatar

We've never felt quite so welcomed as we have when walking up to the Model S. The car detects the proximity of the key and, just as you're about to reach the door, the lights come on and the door handles extend from their normally retracted positions.

ENGADGET: blogger-avatar

The water reflected the gray-blue of the darkening sky, and the lights of the water-pumping stations had come on, making them look like a line of floating gazebos.

NEWYORKER: Great Experiment

The lights didn't come on when President Barack Obama emerged, and he was illuminated only briefly by the flash of cameras.

BBC: Obama's secret trip to Afghanistan