A wide open space (It could be your backyard or a park.) Two Hula-Hoops (Alternatively, you could use two flat rocks or bricks that you can sit on.) A yardstick or meterstick (Use one that has clear ...

The microscope has been going through something of a renaissance in the last 20 or so years. Once abandoned for all but the simplest work, it is now once again a primary tool of investigation into ...

For the first time, astronomers have directly measured the distance to a spot clear across the galaxy. The established but challenging technique promises a new way to map the structure of the Milky ...

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Actual experimental results demonstrate the promise of a glasses-free 3-D theater experience. Two cars, one red and one blue, are projected onto a screen through a parallax barrier. As the light ...

One of the subtle, but cool features of iOS 7 is the parallax effect that gives on-screen elements a sense of depth and movement as you tilt your phone. In a recent article, Macworld's Marco Tabini ...