Teacher training: Spectroscopy laboratory learning unit
Part 1: Waves, frequencies and sound (more text to come) Introduction to waves, frequencies, Fourier decomposition. Experimenting with smartphone app to visualize spectrum of tuning forks, harmonics in "pure tones" of human voice, ...
Part 2: Light (low-cost spectrometer) (more text to come) Building and using a low-cost spectrometer. Materials needed:
- A shoe-box
- Empty DVD to use as grating (see here for a more refined version of the spectrometer, with the description of how to cut the DVD)
- Any cheap webcam
- Energy-saving lightbulb (not LED) for calibration (see reference spectrum below)
- Black paper for screen with slits (cut them thin!)
- Paper tape
