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A brief description of the concepts is provided in each box. Many questions utilize charts, diagrams, photographs and data included in the module. In most questions students are expected to reach conclusions based on the figures and data.

Observational (ATPI)

Investigation #25: Using the Diffraction Grating to Identify an Unknown Element

Analysis of a line spectrum presented as a diagram
Activity based exercise observing and measuring line spectra with a grating
Analysis of a line spectrum containing more than one element
Fraunhofer lines on the solar spectrum

Other Observational Modules:
#6| #7| #8| #9| #11| #12| #13| #14| #15| #20| #22| #23| #24

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	Observational (ATPI)
	Investigation #25: Using the Diffraction Grating to Identify an Unknown Element
	Analysis of a line spectrum presented as a diagram Activity based exercise observing and measuring line spectra with a grating Analysis of a line spectrum containing more than one element Fraunhofer lines on the solar spectrum
Other Observational Modules: #6\| #7\| #8\| #9\| #11\| #12\| #13\| #14\| #15\| #20\| #22\| #23\| #24