Earth’s Magnetic Field Experiment

Product Code: EX-5539A


The magnitude and direction of the Earth’s magnetic field are measured using a Magnetic Field Sensor mounted on a Rotary Motion Sensor. The Magnetic Field Sensor is rotated through 360 degrees by rotating the Rotary Motion Sensor pulley by hand. The Magnetic Field Sensor is zeroed using the Zero Gauss Chamber, the walls of which are made of a highly permeable material which redirects the magnetic field around the chamber.

PASCO Advantage:
The sensitive Magnetic Field Sensor combined with the Rotary Motion Sensor enables the measurement of the magnetic field strength as a function of angle from North. It is essentially a computerized compass that can measure both the direction and the magnitude of the field.

Designed for use with any of the following:

  • 850 Universal Interface
  • 550 Universal Interface
  • Any PASPORT interface with 2 ports


  • Magnitude of the earth’s magnetic field
  • Direction of earth’s magnetic field
  • Dip angle


What’s Included

Software Required

This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »

Interface Required

This product requires a PASCO Interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »

Support Documents

Adjustable Angle Rod Clamp Manual

Dip Needle Manual  

Angle Indicator Manual  

PASPORT 2-Axis Magnetic Field Sensor Manual 

PASPORT Rotary Motion Sensor Manual

Replacement Plumb Bobs Manual

Manual Downloads

Product Manuals for the Included Products

Adjustable Angle Clamp Manual (ME-8744)
(42 KB – .pdf – English)
Dip Needle Manual (SF-8619)
(26 KB – .pdf – English)
Angle Indicator Mnl ( ME-9495A)
(127 KB – .pdf – English)
Rotary Motion Sensor Manual PS-2120A
(1.1 MB – .pdf – English)
Experiment File
EX-5539 Earth’s Magnetic
(15.7 MB – .zip – English)