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Direct linkLunk, Brandon; Beichner, Robert – Physics Teacher, 2011
A compass is an excellent classroom tool for the exploration of magnetic fields. Any student can tell you that a compass is used to determine which direction is north, but when paired with some basic trigonometry, the compass can be used to actually measure the strength of the magnetic field due to a nearby magnet or current-carrying wire. In this…
Descriptors: Physics, Calculus, Prediction, Science Instruction
