When the camera's completely switched off, hit the power button and you'll go straight into camera mode which lets you shoot immediately, then about half a minute later the interface seamlessly goes back to smart mode, which is when you can hit the back or home button to toggle the Android unlock screen (though we'd rather go straight into the home screen).

ENGADGET: Nikon Coolpix S800c hands-on: a closer look at the Android camera (video)

When switched off, many appliances do not actually kill the power but go into a standby mode instead sucking electricity, vampire-like, from the plug.

ECONOMIST: The much-talked-of smart grid prepares to enter the home

When you need more portable power, you may one day just pull some off a roll, and go.

ECONOMIST: Storing electricity

Samuels-Thomas tied it on a power play with 9:18 to go at 10:42, and Bui beat goalie Tony Capobianco off a rebound with 5:32 left.

WSJ: Quinnipiac rallies to beat Canisius

Most appliance motors today have a single speed, go on and off frequently (think about your air conditioner or fridge) and hog power on startup, enough to dim the lights.

FORBES: Smarter, Cheaper