| 31. | light rays, are followed into the future, points in the future of the region are generated.
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| 32. | The laser lab explores light rays and colors.
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| 33. | That means that light rays could have a spacelike appearance, an obvious parallel to the Alcubierre model.
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| 34. | The positive integer n stands for the number of turns a light ray makes around the lens.
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| 35. | The narrow, windowless room is guarded by electronic locks and the red-beam light rays of motion detectors.
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| 36. | A device which produces converging or diverging light rays due to refraction is known as a lens.
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| 37. | Draper developed the proposition in 1842 that only light rays that are absorbed can produce chemical change.
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| 38. | The first, when accidentally unfastened, flies back to the sun because of the light rays trapped within.
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| 39. | To view the figure, the light rays leaving the microscope must emerge more or less in parallel.
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| 40. | Supposing the inhabitants were to view rods believed to be rigid, or measure distance with light rays.
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