The eye tracker also detects the eye distance of the wearer by measuring the eyes' vergence, which allows to optimize the 3D experience for individual physiognomies.
ENGADGET: SMI Eye-Tracking 3D Glasses use rim-based cameras to adjust perspective
"Sunflowers" (1888 or 1889), from Philadelphia's own collection, is a virtuoso performance in color harmony, showing a ceramic vase of perky yellow blossoms against a swirling cerulean background, but it is entirely orthodox from a compositional standpoint, as the vase sits squarely in the middle distance at eye level.
Viewing visual contents on Samsung's Curved OLED TV is a comfortable experience for the human eye, as the curved panel allows the distance between the user and TV screen to be the same from almost any angle.
ENGADGET: Samsung announces 'world's first' curved OLED, we go eyes-on
At 220 pixels-per-inch, the Retina display's pixel density is so high the human eye cannot distinguish individual pixels from a normal viewing distance, so text and graphics look incredibly sharp.
All Max needed to do was sail north for a few hours and keep his eye on the dim glow of the city in the distance.
Anyone able to perceive the Great Wall from the moon would have to have an eye keen enough to see a human hair from a distance of two miles.
"I don't miss the red-eye flights or putting on pantyhose or the stress of not being within driving distance of my 20-month-old son, "says Ren Shimada Siegel, a former Novell marketing manager who now runs a placement agency from her home.
The laptop's 12.85in (32.64cm) display's resolution is similar to the so-called Retina Display of Apple's MacBook range, aimed to have pixel density high enough for the human eye not to notice pixelation when looking at the screen at a typical viewing distance.
Its eye-catching logo of white lettering on a blue background made it recognizable from a distance.
In 2029, it will approach the Earth within a distance closer than a geostationary satellite - and near enough to be seen with the naked eye.
But there, right at eye level, stand the tops of the 80-storey bridge towers, with skyscrapers reflecting sunlight in the distance.
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