Measurement of the characteristics of the Earth's magnetic field using a smartphone magnetic sensor

Michael R. Koblischka, Anjela Koblischka-Veneva

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Several properties of Earth's magnetic field (field vectors, time dependence) are measured in various locations using a smartphone/tablet magnetic sensor. To enable a proper use of the magnetic sensor as a classroom tool, the exact location of the sensor in the device and its resolution must be identified in a first step. Then, students may perform several measurements on their own, allowing a comparison of the recorded field vectors and a discussion of the possible deviations. We also show that long-time measurements of the local magnetic field are possible using the smartphone sensors, which can be compared to available internet data. All the information obtained enables a better understanding of the properties of the Earth's magnetic field and of the requirements for real applications of magnetic sensor elements.

Original languageEnglish
Article number045021
JournalPhysics Education
Volume57
Issue number4
DOIs
Publication statusPublished - 2022 Jul

Keywords

  • Earth magnetic field
  • magnetic sensor
  • smartphone

ASJC Scopus subject areas

  • Education
  • General Physics and Astronomy

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