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published by the Exploratorium
This activity from the Exploratorium provides instructions to build an electroscope, a device that detects electrical charge.  Common, inexpensive materials including film canisters are used to show the attractions and repulsions between positively and negatively charged objects.  The site also provides an explanation of the results and suggestions for extension activities.
Subjects Levels Resource Types
Electricity & Magnetism
- Electrostatics
- Middle School
- High School
- Informal Education
- Instructional Material
= Activity
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Additional Information
Physics To Go This resource was a Physics To Go feature from September 1, 2009 until September 16, 2009. View the feature here!

Access Rights: Free access
Restriction: Has a copyright or other licensing restriction.
Keywords: attract, charge, electron, negative, positive, repel
Record Creator: Metadata instance created November 8, 2006 by Ann Deml
Record Updated: May 06, 2008 by Lyle Barbato
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AIP Format
(Exploratorium, San Francisco), WWW Document, (
Electroscope (Exploratorium, San Francisco), <>.
APA Format
Electroscope. (n.d.). Retrieved December 1, 2022, from Exploratorium:
Chicago Format
Exploratorium. Electroscope. San Francisco: Exploratorium. (accessed 1 December 2022).
MLA Format
Electroscope. San Francisco: Exploratorium. 1 Dec. 2022 <>.
BibTeX Export Format
@misc{ Title = {Electroscope}, Publisher = {Exploratorium}, Volume = {2022}, Number = {1 December 2022}, Year = {} }
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%T Electroscope %I Exploratorium %C San Francisco %U %O text/html

EndNote Export Format

%0 Electronic Source %T Electroscope %I Exploratorium %V 2022 %N 1 December 2022 %9 text/html %U

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