The validity of simulating star map is verified by using the angle-distance of stars and projection theorem.

利用星间角距和投影原理的性质来验证星图模拟的有效性。

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The 24-inch LCD monitor uses a built-in CMOS sensor to determine your distance from the screen and your neck angle while sitting.

CNN: Computer monitor uses sensor to promote better posture

The brain gets disoriented trying to reconcile the difference between the distance to the image and the foreshortened viewing angle.

FORBES: Adventures in the Third Dimension

The device saves all the data from each hit, namely the animation, path, putter-face angle at impact and throughout the stroke, angle of attack, tempo, impact speed and swing path distance -- in other words, more information than most players would know what to do with.

ENGADGET: 3BaysGSA Putt: a Bluetooth golf gadget that puts eyes in your putter (hands on)