NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ1037303
Record Type: Journal
Publication Date: 2014-Jan
Pages: 9
Abstractor: As Provided
Reference Count: 1
ISSN: ISSN-0031-9120
Educational Inductive Gravimeter
Nunn, John
Physics Education, v49 n1 p41-49 Jan 2014
A simple inductive gravimeter constructed from a rigid plastic pipe and insulated copper wire is described. When a magnet is dropped through the vertically mounted pipe it induces small alternating voltages. These small signals are fed to the microphone input of a typical computer and sampled at a typical rate of 44.1 kHz using a custom computer program. Knowing the geometrical dimensions of the gravimeter and calculating the time intervals between peaks of the recorded signal it is possible to calculate the local gravitational acceleration (g). Limitations and improvements are discussed. Instructions are included throughout so that teachers and pupils can replicate the experiment in their own schools
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Secondary Education; High Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A