This display requires that JavaScripts be enabled in your browser. For instructions, view http://www.nasa.gov/home/How_to_enable_Javascript.html
Close This Window
Small multimedia sample image
Instrument: ELECTROMETER
View entire text

Related Data Sets
View all records related to this instrument


Description
An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand-made mechanical instruments to high-precision electronic devices. Modern electrometers based on vacuum tube or solid state technology can be used to make voltage and charge measurements with very low leakage currents, down to 1 femtoampere. A simpler but related instrument, the electroscope, works on similar principles but only indicates the relative magnitudes of voltages or charges.

[Summary provided by the National High Magnetic Field Laboratory.]

Online Resources
http://www.orau.org/ptp/collection/electrometers/electrometers.htm

Close This Window