Stable levitation of one magnet by another is usually prohibited by Earnshaw's Theorem, but the introduction of diamagnetic material at special locations can stabilize such levitation. The demonstration is a replica of an experiment...
OHP representation of lines of force using bar magnet and iron filings.
The magnetic field lines of the Earth can be represented by the field lines of a bar magnet.
The Earth's magnetic field is basically a magnetic dipole...
A current carrying wire in a magnetic field experiences a force at right angles to both the field and current directions. The wire will jump up or down, depending upon the current direction.
Video of the demo in action https://youtu.be/0tq0hNYF1Ts
The magnetic field lines of the Earth can be represented by the field lines of a bar magnet.
The Earth's magnetic field is basically a magnetic dipole. It can therefore be represented to first approximation by the field of a...
What it shows: Using the classical description of the motion of a spin in an external magnetic field, the demonstration helps visualize NMR in the time domain. The nuclear magnet and its classical vector model are represented by a spinning ball with...
A changing magnetic flux induces a current in a metal ring; the magnetic field due to this current opposes the primary field, repelling the ring and flinging it into the air. That's the simple "hand waving" explanation for the beginner...
A 60 Hz AC magnetic flux from an iron core induces an emf in a suspended coil of wire. With appropriate capacitance added, the coil will be attracted to, repelled from, or not affected by the magnetic flux.
When the suspended coil is...
When a magnetic field is applied perpendicular to a conductor carrying current, a potential difference is observed between points on opposite sides of the conductor. This happens because the magnetic field deflects the moving electrons...
Oersted showed that an electric current produces a magnetic field. His experiment is repeated here on a suitable grand scale.
The current carrying wire in this case is a tubular 22mm diameter copper pipe of dimensions shown in fi...
It's impossible to magnetically levitate an object with static magnetic fields. However, it's posible to levitate a magnet with another hand-held magnet by taking advantage of eddy currents.
A rectangular block of copper (6"×6"...
A bar magnet or other source of magnetic field induces a current in a coil of wire when the magnetic flux through the coil changes.
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An electric current in one conductor can induce a current in a separate conductor. The inducing current must...
