Define a spectrum and discuss how spectra are used in astronomy.
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Define a spectrum and discuss how spectra are used inastronomy.Explain how emission and absorption lines are produced and discussthe information they convey.Describe how the spectrum of an object emitting thermal radiationcan be used to find the objectâs temperature.
1. Does each element have its own emission spectrum?
Researchers have recently learned how to fabricate thin-filmcoatings only a few atoms thick out of alternating layers oftungsten and boron carbide. These coatings are expected to greatlyimprove the x-ray telescopes used in astronomy. What are the twolongest x-ray wavelengths that will reflect at normal incidencefrom a film with a thickness of 1.60nm?Part APlease enter the longest x-ray wavelength. ___nmPart BPlease enter the second longest x-ray wavelength. ____nm