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Modern Physics

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7B 10.10 - Line Spectra and Student Gratings

Demonstrates: Ionization of gas.
Description: Tube stand holds several tubes that can be lit one at a time.

7B 10.20 - Diffraction with Pass-out Slits

Demonstrates: Diffraction of light.
Description: Use single Geissler tube set up with one, two and three slit "pass-out" gratings.

7B 10.30 - Spectral lines of LEDs

Demonstrates: Emission spectra of LEDs
Description: Light from an LED is measured using a spectrometer. Students can be shown the wavelength using software on the computer.

7B 20.10 - Laser Gas Discharge Tube

Demonstrates: Inner workings of lasers
Description: Old laser gas discharge tubes.