| 21. | These arms will house laser beams of exactly the same length.
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| 22. | Upward-looking radar and laser beams penetrate and chart the upper atmosphere.
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| 23. | Teleporting a laser beam involves destroying and replicating billions of photons.
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| 24. | The patented system relies on a laser beam to identify micro-organisms in water.
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| 25. | The lights dimmed and three radiant laser beams converged on the operating table.
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| 26. | Most laser scanners use moveable mirrors to steer the laser beam.
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| 27. | They look black, yet her gaze is invariably likened to a laser beam.
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| 28. | A low-power laser beam alters the dye in the recording layer.
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| 29. | Many hospitals already have the machine that generates the laser beam, he said.
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| 30. | The laser beam is harmless, similar to the beams used in laser pointers.
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