This Instructabler is a scientific investigation to determine how magnetic field varies with distance. Two methods are presented , and reasonable conclusions made.
The magnet is a thin disk type, not a bar magnet.
- Tools and equipment:
- One rare earth neodymium magnet, 16mm diameter x 3mm.
- Precise scale measuring to 0.1 gram
- Balance beam apparatus to allow measuring magnetic attraction
- Magnetic compass
- Tape measure (non magnetic)
Note: This is a revision of an earlier Instructable by the same author. New data, analysis, and conclusions are presented to update and correct the previous Instructable, Determine how magnetic field varies with distance.
Some changes were also made in order to qualify for the Scientific Method contest on Instructables.com.