Class practical: the deflection of a compass needle increases with the current carried by a wire.
Class practical: a plotting compass and iron filings show that the shape of this magnetic field resembles that of a permanent...
Class practical: iron filings show that a long, closely wound current-carrying coil behaves just like a bar magnet.
Class practical: iron filings reveal the pattern of magnetism around a current-carrying wire, and factors that affect it.
Class practical: using a plotting compass and iron filings to explore the field pattern.
Teaching notes on using iron fillings in the classroom.
Robert Norman was a scientific instrument-maker, working in London in the 1560s-80s. Among other devices, he made compasses...
Recognising and celebrating outstanding contributions to the field of physics education.