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