We propose a simple experiment to explore magnetic fields created by electric railways and compare them with a simple model and parameters estimated using easily available information. A pedestrian walking on an overpass above train tracks registers the components of the magnetic field with the built-in magnetometer of a smartphone. The experimental results are successfully compared with a model of the magnetic field of the transmission lines and the local Earth’s magnetic field. This experiment, suitable for a field trip, involves several abilities, such as modeling the magnetic field of power lines, looking up reliable information, and estimating non-easily accessible quantities.
Magnetic fields produced by electric railways / Monteiro, Martin; Organtini, Giovanni; Marti, Arturo. - In: THE PHYSICS TEACHER. - ISSN 0031-921X. - (2020). [10.1119/10.0002390]
Magnetic fields produced by electric railways
Giovanni OrgantiniConceptualization
;
2020
Abstract
We propose a simple experiment to explore magnetic fields created by electric railways and compare them with a simple model and parameters estimated using easily available information. A pedestrian walking on an overpass above train tracks registers the components of the magnetic field with the built-in magnetometer of a smartphone. The experimental results are successfully compared with a model of the magnetic field of the transmission lines and the local Earth’s magnetic field. This experiment, suitable for a field trip, involves several abilities, such as modeling the magnetic field of power lines, looking up reliable information, and estimating non-easily accessible quantities.File | Dimensione | Formato | |
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