Insulated elongated ellipsoid.

Insulated elongated ellipsoid.

<< >>
Usage conditions apply
Downloads
Description (Brief)
Conducting Elongated Ellipsoid, brass on glass rod with a wooden base. To show the difference in distribution of charge on pointed and blunt surfaces. The concentrated charge on the pointed end will attract a spark from a longer distance than will the diffuse charge on the blunt end. This relates to 18th century debates about the preference for pointed or blunt tips on lightning rods. Originally from Woodstock College. Ref: Ganot 4th ed. p. 620. Tag on bottom, "P. D. W. C./ El10".
Location
Currently not on view
Object Name
Conducting Elongated Ellipsoid
electrostatic elongated ellipsoid
electrostatic device
Other Terms
Conductor, Insulated ?; Conducting Elongated Ellipsoid; Electrostatic Devices
Measurements
overall: 16 1/2 in x 9 in x 6 1/2 in; 41.91 cm x 22.86 cm x 16.51 cm
ID Number
EM.328459
catalog number
328459
accession number
271661
Credit Line
from Weston College, Dept. of Physics thru Father Robert F. O'Brien
See more items in
Work and Industry: Electricity
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Note: Comment submission on our collection pages is temporarily unavailable. Please check back soon!

If you have a question or require a personal response, please visit our Museum Collection FAQ or contact page.