lab2_3.jpg - As indicated earlier white light contains a continuous spectrum including all the visible wavelengths of light Interestingly if one uses a

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Unformatted text preview: As indicated earlier, white light contains a continuous spectrum including all the visible wavelengths of light. Interestingly, if one uses a spectroscope to look at sunlight (not directly at the sun, which v cause damage to your eyesight!!, but indirectly by pointing the spectroscope at a clear part of the we observe numerous dark lines superimposed on the continuous spectrum. This phenomenon was originally observed by Wollaton in 1802 and then again later by Fraunhofer in 1817. Called Frau it lines, these lines correlate with the line spectra of various elements that are thought to exist in the outer atmosphere of the sun (Figure 7). 400 450 500 550 600 650 700 750 wavelength (nm) Figure 7 Fraunhofer lines. a. Explain the process by which these dark lines are generated by the elements in the sun's atmosphere. Specifically, why are they black and not colored, and why do they match the colored line spectra of those elements? These lines are black & not colored because of different elements like helium &hydrogen, which are both found in the jun's atmosphere. b. Compare the Fraunhofer lines to the line spectra in Figure 6. Which of these elements are in the sun? Hydrogen ? Helium Connection ased on your experience in this lab, draw a connection to something in your everyday life or the world around u (something not mentioned in the background section). 1020 1...
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