ERIC Number: EJ543514
Record Type: CIJE
Publication Date: 1997
Reference Count: 0
A Simple Audio Conductivity Device.
Berenato, Gregory; Maynard, David F.
Journal of Chemical Education, v74 n4 p415-17 Apr 1997
Describes a simple audio conductivity device built to address the problem of the lack of sensitivity needed to measure small differences in conductivity in crude conductivity devices. Uses a 9-V battery as a power supply and allows the relative resistance differences between substances to be detected by the frequency of its audible tones. Presents experiments that use the device. (JRH)
Publication Type: Guides - Classroom - Teacher; Journal Articles
Education Level: N/A
Authoring Institution: N/A