9781422282915

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S T E M I N C U R R E N T E V E N T S

Not quite stylish enough for the street, 3D glasses like these are perfect to wear in a darkened theater, as surprisingly old technology is played out in new films.

two separate lenses, much like human eyes. In the 3D movies of yesteryear, one of these lenses was filtered with red and the other with blue.When the viewer wore a special set of red and blue glasses, one eye let in the red light and the other the blue light from the film. The result was that each eye combined its own perspective into a 3D image. The problemwith this old-fashioned method was that filmmak- ers couldn’t use a full spectrum of color. Today’s 3D movies are much more sophisticated. They use something called polarized light to create a 3D effect and preserve color and clarity of image.