Photoelectric Effect in Zinc
Description: Discharge a clean zinc plate mounted on an electroscope with UV light.
Vibrating Circular Wire (Bohr’s Model)
Description: Excite a circular wire at audio frequencies by an electromagnet drive to produce standing waves. A model of the electrons and their vibrations.
Description: A pinwheel inside of a glass bulb with partial vacuum rotates due to infrared radiation pressure.
X – Ray Tube & Crystal
Description: Display only.
Line Spectra & Student Gratings
Description: Students view line sources through replica gratings.
Spectrum with a Prism
Color Filter Lamp & Student Gratings
Description: Show many substances that fluoresce and phosphoresce in UV light, and can show short and long wavelengths.
Bohr Model (Oscillating Wire Ring)
Description: Excite a circular wire at audio frequencies by an electromagnet drive to produce standing waves.
Geiger Counter & Samples
Description: Can view the alpha, beta and gamma particles of a thorium welding rod in a very dense alcohol vapor.