Then the light and perspective shift, and the domes begin to bulge and take on dimension.

NPR: A Pilgrimage to the Taj Mahal, a 'Poem in Stone'

If you change your focus from near to far, the shift in light quality is almost imperceptible.

WSJ: The Petzl Nao: A Smarter Light | At Play

On the Newt 2012 sign hanging above the double doors is a make shift laser light show blinding Newt out.

FORBES: Outside Gingrich NH Offices, Ron Paul Supporters Party

Efforts to increase wakefulness in night-shift workers have focused on the use of light at night to suppress melatonin, a sleep-regulating hormone.

WSJ: Skin Cancer, Driving and Men

Great bulls loomed from the darkness, herds of horses cantered across the cave walls, reindeer reared their antlered heads, seeming to shift and stir in the flickering lamp-light.

BBC: The perfect trip: Dordogne

Early in this decade Intel found a groove when paired a new breed of power sipping mobile processors with wireless connectivity to lead the shift from boxy, deskbound PCs to thin, light notebook computers.

FORBES: McAfee And The Software Side Of Intel

Details of the shift are not public, but a 2011 staff study sheds some light.

ECONOMIST: Free exchange

Light and quality of sleep are well-known to be linked, as anyone who has ever pulled a night shift will attest.

ENGADGET: Alt-week 12.08.12: The oldest known dinosaur, lighting up a space station and the black marble

But her light bulb moment didn't come until she was driving home from work, tired after an all-night shift in the emergency room.

WSJ: Tactics to Spark Creativity

While demand for light, fuel efficient vehicles was on the rise, Ford actually sold fewer trucks this May, evidencing a clear shift in consumer preferences.

FORBES: May Auto Sales: Another Sign Of A Stalling Economy