| 41. | The spectra of these objects display absorption around 1.55 micrometers.
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| 42. | Transmittance of ruby in optical and near-IR spectra.
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| 43. | X-ray and infrared spectra are telltale signs of brown dwarfs.
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| 44. | Plasma clouds lose energy through IR, or X-ray spectra.
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| 45. | In 2009, Spectra Records released three albums by Nazz.
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| 46. | By examining the spectra of nebulae, astronomers infer their chemical content.
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| 47. | There are a wide range of experimental approaches for measuring absorption spectra.
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| 48. | In 2007, the band signed a recording contract with Spectra Records.
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| 49. | The spectra of emission by microwave spectroscopy or by far infrared spectroscopy.
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| 50. | They gathered spectra on it using the Far Ultraviolet Camera / Spectrograph.
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