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Physics and Astronomy Demonstrations

Modern Physics

 


Quantum Effects


 

Photoelectric Effect in Zinc

PIRA: 7A10.10

Description: Discharge a clean zinc plate mounted on an electroscope with UV light.

 

Vibrating Circular Wire (Bohr’s Model)

PIRA: 7A50.40

Description: Excite a circular wire at audio frequencies by an electromagnet drive to produce standing waves. A model of the electrons and their vibrations.

 

Crookes’ Radiometer

PIRA: 7A55.30

Description: A pinwheel inside of a glass bulb with partial vacuum rotates due to infrared radiation pressure.

 

X – Ray Tube & Crystal

PIRA: 7A60.96

Description: Display only.

 

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Atomic Physics


 

Line Spectra & Student Gratings

PIRA: 7B10.10

Description: Students view line sources through replica gratings.

 

Spectrum with a Prism

PIRA: 7B10.12

 

Color Filter Lamp & Student Gratings

PIRA: 7B10.15

 

Fluorescence

PIRA: 7B13.51

Description: Show many substances that fluoresce and phosphoresce in UV light, and can show short and long wavelengths.

 

Bohr Model (Oscillating Wire Ring)

PIRA: 7B50.11

Description: Excite a circular wire at audio frequencies by an electromagnet drive to produce standing waves.

 

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Nuclear Physics


 

Geiger Counter & Samples

PIRA: 7D10.10

 

Cloud Chamber

PIRA: 7D30.60

Cloud Chamber

Description: Can view the alpha, beta and gamma particles of a thorium welding rod in a very dense alcohol vapor.

 

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Relativity


 

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