ERIC Number: EJ1162124
Record Type: Journal
Publication Date: 2017-Dec
Abstractor: As Provided
Magnetic Field "Flyby" Measurement Using a Smartphone's Magnetometer and Accelerometer Simultaneously
Monteiro, Martin; Stari, Cecilia; Cabeza, Cecilia; Marti, Arturo C.
Physics Teacher, v55 n9 p580-581 Dec 2017
The spatial dependence of magnetic fields in simple configurations is a common topic in introductory electromagnetism lessons, both in high school and in university courses. In typical experiments, magnetic fields and distances are obtained taking point-by-point values using a Hall sensor and a ruler, respectively. Here, we show how to take advantage of the smartphone capabilities to get simultaneous measures with the built-in accelerometer and magnetometer and to obtain the spatial dependence of magnetic fields. We consider a simple setup consisting of a smartphone mounted on a track whose direction coincides with the axis of a coil. While the smartphone is moving on the track, both the magnetic field and the distance from the center of the coil (integrated numerically from the acceleration values) are simultaneously obtained. This methodology can easily be extended to more complicated setups.
Descriptors: Physics, Science Instruction, Introductory Courses, Science Experiments, Measurement, Electronic Equipment, Telecommunications, Handheld Devices, Magnets
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: firstname.lastname@example.org; Web site: http://aapt.scitation.org/journal/pte
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A