a device for detecting the presence and determining the sign of electric charges by means of electrostatic attraction and repulsion, often between two pieces of ...
http://dictionary.reference.com/browse/electroscope
An instrument used to detect the presence, sign, and in some configurations the magnitude of an electric charge by the mutual attraction or repulsion of metal ...
http://dictionary.reference.com/browse/electroscope
Am electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It was the first electrical ...
http://www.thefreedictionary.com/electroscope
noun elec·tro·scope \i-?lek-tr?-?sk?p\. Definition of ELECTROSCOPE. : any of various instruments for detecting the presence of an electric charge on a body, ...
http://www.thefreedictionary.com/electroscope
An electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It was the first electrical ...
http://www.merriam-webster.com/dictionary/electroscope
electroscope: An instrument used to detect the presence, sign, and in some configurations the magnitude of an electric charge by the mutual attraction or ...
http://www.merriam-webster.com/dictionary/electroscope