For maximum runtime the switch is held down for ten seconds, activating the light in dim mode and producing a mild 1.3 lumens of lightwith an extreme runtime of 480 hours.
LONDON, Saturday 23rd March - As the UK prepares to go 'into darkness' for WWF's Earth Hour, Paramount Pictures is pleased to announce its support with a special 'Star Trek' themed light display which will dim as Earth Hour approaches.
Apple has embedded a fiber-optic lighting system to illuminate the keyboard and bolstered it with sensors that can tell when the ambient light in the room begins to dim.