| 41. | This means that the refractive index is just above zero.
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| 42. | Refractive index is used to measure solids, liquids, and gases.
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| 43. | The refractive index varies with the wavelength of light.
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| 44. | A change in refractive index registers as clear ice.
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| 45. | These include bandwidth while the refractive index is negative.
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| 46. | The refractive index of jet is approximately 1.66.
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| 47. | Its refractive index is 1.406 at 20 �C.
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| 48. | As for refractive index, that's a good one!
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| 49. | The refractive index of ammonium sulfite is 1.515.
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| 50. | The refractive index at 20 �C is 1.393.
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