- Sections
- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
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- P. Modern Physics
J2-03. Van De Graaff Generator With Ground Sphere
Purpose
To demonstrate operation of a Van de Graaff generator and to illustrate electrostatic concepts.
Equipment
Van de Graaff generator with ground sphere.
Images
Description
The ground sphere is positioned a few inches away from the Van de Graaff dome and grounded to the base of the Van de Graaff. When the machine is turned on, the dome becomes charged negative and the ground sphere becomes charged positive by induction. The ground sphere is attracted to the dome, as can be easily seen. After the spark, the two spheres lose their charges, and the ground sphere relaxes to its original position, whereupon the cycle repeats.
References
Ronald Blum, Notes on "Image Methods in Electrostatics" (A Computer-Animated Film), AJP 36, 412-417 (1968). ◙R. J. Van de Graaff, K. T. Compton, and L. C. Van Atta, The Electrostatic Production of High Voltage for Nuclear◙Investigations, Physical Review 43, 149-157 (1933). ◙A. W. Simon, On the Theory of the Van de Graaff Electrostatic Generator, AJP 22, 318-326 (1952). ◙R. G. Herb, Van de Graaff Generators, Handbuch der Physik 44, 63-104 (1959). ◙K. S. Subudhi and P. Tiwari, Comparison of Simon's and Van de Graaff's Theories of the Electrostatic Generator, AJP 30,◙333-335 (1962). ◙K. Asano and
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See pagesj1. electrostatic charge & force
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See pagesj3. electric fields & potential
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See pagesj4. capacitance & polarization
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See pagesj5. magnetostatics
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See pagesj6. electromagnets
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See pagesj7. magnetic materials
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See pagesj1. electrostatic charge & force
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See pagesj3. electric fields & potential
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See pagesj4. capacitance & polarization
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See pagesj5. magnetostatics
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See pagesj6. electromagnets
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See pagesj7. magnetic materials