Emission of Light

The quantum process of light emission is briefly described and the discrete spectra are demonstrated from excited hydrogen, helium and mercury gases. In another experiment, an incandescent light bulb with a vertical tungsten filament is used to demonstrate the continuous spectrum of light by a hot solid metal filament.
Equipment:
- Various spectral tubes
- Spectral tube power supply
- Diffraction grating with projection lens
- Light bulb with vertical filament
- Variac
- Screen
----------------------------
This video is part of the project "Videos of Physics Demonstrations", which is created by Dr. Galli and Dr. Amiri of Physics Department, Weber State University. To access the full library of the videos, please visit this link: www.weber.edu/physics/amiri_g...
Links to University and Department:
Weber State University Homepage: www.weber.edu/
WSU Physics Department: www.weber.edu/physics