Each mirror acts as a beam-steering device, controlling whether a single picture element (pixel) in the image is light or dark.

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While the driving lights are the first use of a laser beam reflected off a mirror, the daytime running lamps, with their characteristic "torch" effect, and the indicator lights use LEDs.

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We took down a mirror above her mantelpiece because we were told that a beam could be transmitted into the room to listen to a conversation in that room.

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The pump beam had a large effect on the reflectivity of the mirror, but only over a narrow range of temperatures.

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