And they can be bent, allowing the light to go through the lenses at the correct angle.

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Colors on this thing span the Skittles rainbow of green, orange, red, blue and a new metallic blue, Azzurro Thetys, whose tone varies with the angle of the light.

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Three video pictures of the operation streamed on the screen one from a camera in the operating light, one from a wide-angle room camera, and one with the feed from the anesthesia monitor.

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When your Android phone (the app is not yet available on iTunes) is held at a safe viewing angle, a green light shines in the top left corner.

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The sight of small white figures endlessly regrouping, wandering about, pondering the light, all seen from one fixed angle, made poor spectator sport and even worse television.

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It's sweet and simple: the camera captures the reflection of light on the user's eye, and image processing technology then calculates the user's viewing angle to allow for hands-free navigation on-screen.

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"Light coming in at a high angle will illuminate the sides of the blades, causing them to retreat away, " he explained.

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We then take hundreds of these narrow videos (each shot at a slightly different angle) and create a carefully synchronized, slow-motion composite of the light pulses.

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The light, compact 3x zoom lens covers a frequently-used range of focal lengths from wide-angle 18mm to standard 55mm (35mm camera equivalent range: 27-82.5mm).

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