5 Electricity & Magnetism

Conductors vs Insulators

A "pith" ball may be used in place of an electroscope
Catalog: 
5A30.15A
Location: 
Attach an electroscope to one end of a metal rod. Bring a charged rod near the opposite end and the electroscope will deflect showing that charges will move through a conductor. Replace the metal rod with an acrylic one and the electroscope will not deflect when a charged rod is brought near the opposite end. A "pith" ball may be used instead of the electroscope.

Generator Driven by Falling Weight

Generator Driven by Falling Weight
Catalog: 
5K40.85A
Location: 
Da4
A falling 2kg mass driving a generator, falls slower when the generator is under the load of a lightbulb.

Gauss Accelerator "Gauss Rifle"

Catalog: 
5G10.55
Location: 
Cb4
A Gauss accelerator made from spherical magnets and ball bearings.

Hand Held Tesla Coil & Lamps

Catalog: 
5N20.25
Location: 
Dc2
Hold a hand held tesla coil near a fluorescent lamp to or use the special socket to turn a ordinary light bulb into a plasma globe.

Magnetic Force Accelerator

Catalog: 
5H40.31
Location: 
Cd1
A current-carrying conductor in a uniform magnetic field experiences a force that is made evident by the conductors rolling along the rails of the apparatus.

Electromagnet with 1.5V Battery

Catalog: 
5G20.70A
Location: 
Cb4
Lift up to 200lbs with only one 1.5V D cell battery for power.

Hand crank generator

demonstration image
Catalog: 
5K40.80A
Location: 
Da4
Magneto-electric generator

Eddy Current Pendulum

demonstration image
Catalog: 
5K20.10A
Location: 
Cd5
A solid plate pendulum is passed through the gap of a powerful magnet, dramatically demonstrating eddy currents. Then a slotted pendulum is used, with dramatic contrast.

Magnetic Beans

A compass is placed on top of the can while the can is turned.
Catalog: 
5H10.30D
Location: 
Cc2
A can that sits on the shelf for a long time without moving becomes magnetised.

Hysteresis of a iron-core toroid.

Sargent-Welch toroid.
Catalog: 
5G40.10C
Location: 
Cb4
The Sargent-Welch toroid is used to show a typical hysteresis curve of an inductor/transformer with a ferromagnetic core. When setting this demo up follow the schematic shown, however, values do not need to be exact in order to achieve very good results. This demo also works well with a broad range of frequencies (saw tooth signals are best), just adjust R3 to achieve the desired trace pattern.

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