Then they developed the pictures and loaded them onto three different projectors, one with a red filter over the lens, one with green, and one with blue.

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In addition, 6 of the 12 RadNet monitors we sampled had gone over 8 weeks without a filter change, and 2 of those for over 300 days.

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Then put this in your cool gizmos file: A cheap filter that fits over a conventional monitor or television set and displays very good 3D images.

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Under each section you can filter the stories, by popularity over time - as long as a year - and also watch the stories which are just becoming hot.

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In Chapter restaurant, designed by Tokyo's Spin Studio, a winding iron staircase leads to a mezzanine of book-filled shelves. (It's mostly decorative, though select guests are invited to venture up there.) White perforated screens over the floor-to-ceiling windows filter the light.

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Another hot-selling filter would be one that mutes out all the ruinous voice-over in Wonder Boys.

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The new Reflection Filter adds a reflection to your subject as though it were standing over a glassy, still lake.

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They have the advantage over schools of being a lot nimbler and focusing on newsworthy topics that will take a while to filter into textbooks.

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