Spectroscopy: Emission Spectra and Stellar Composition Analysis
Overview
Teaches spectroscopy fundamentals used in astronomy. Shows how we determine distant star composition.
Why Do This Experiment?
This experiment teaches key concepts in Earth Science.
Materials Needed
- •Diffraction grating (500-1000 lines/mm)(1)
- •various light sources (incandescent(1)
- •fluorescent(1)
- •LED(1)
- •sodium lamp)(1)
- •dark box(1)
- •protractor(1)
Step-by-Step Instructions
- 1
1. Observe different light sources through grating in darkened room
- 2
2. Record each source's spectral characteristics
- 3
3. Identify emission lines (e.g., sodium's yellow doublet)
- 4
4. Discuss astronomical applications (star composition, redshift)
The Science Behind It
Teaches spectroscopy fundamentals used in astronomy. Shows how we determine distant star composition.
Learning Outcomes
- ✓Understand basic earth science concepts
- ✓Develop observation skills
- ✓Learn through hands-on experimentation
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