Investigating Magnetic Field Lines with a Compass @QuantumBoffin

Uploaded March 2021 | Updated September 2026, 4 hours ago

A simple experiment demonstrating how a compass can be used to investigated the magnetic field patterns around a bar magnet and a current carrying wire.

Investigating Magnetic Field Lines with a Compass

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$Telescopes An explanation of the basic physics of refracting telescopes. The video also shows how a simple telescope may be made using two lenses and some cardboard tubing.$

Starting a Fire using a Parabolic Mirror