Using magnetism to exert a torque on other objects

Magnetic Torque

An example of spark

Spark Coil (Large)

With one portion heated, the other cooled, magnetic properties of a coil of wire.

Thermoelectric Magnet

Directionality, waves, and reflection of microwaves. With this one can create a standing wave or numerous other examples of wave properties.
Text Box: Microwave Apparatus

Using induction, an aluminum disc is spun using nothing but a rotating magnet

Arago’s Disk
Text Box: Various properties of circuits involving different components: Capacitors, Resistors, and Inductors.

RC,RL,LC circuits

Another application of the application of Arago’s disc, this time used to make a dynamo.

Arago’s Dynamo

Simple dynamo used to show how force can be turned into electrical energy

Model Dynamo

Thermobile

Properties of inductors and how they are affected in a circuit.
Text Box: Inductance

Gas Discharge Tubes
Text Box:

Edison Effect

Hysteresis in Iron

Using Ohms law and other properties to change a current to different potentials

Power Transformer

Current Balance (Jensen)

Using mercury and a current to create a fountain.
Text Box: Dancing Spring

Triode Vacuum Tube
Text Box: Connected to high voltages (from car batteries) two long wires will repel or attract depending on the direction of the current.

Attraction and repulsion of current carrying wires

Using commutators and a magnetic field, a spinning copper coil can be turned into a dc motor.

Simple DC Motor

Wheatstone Bridge

Section 2: Electricity

Watt Meter

Showing change in magnetic flux induces a current

Text Box: Magnetic Induction of current

Ampere’s Law
Text Box:

Lecher Wires

Used to discuss the slow drift of current even when a large current is applied.

Current Drift Model

Ohm’s Law

Lamp Board

Using series/parallel circuits to deduce what will happen to bulbs of various wattages.
Text Box: Magnetic force of a current (Trapeze)

A coil of wires has different magnetic forces on it at various angles relative to the field.

Magnetic Force on a Current Carrying Coil
Text Box:

Magnetic Force on current Carrying Coils

Relaxation Oscillator

Magnetic Field of a current

Eddy Current Drag

Using voltmeters to gauge the discharge and charge of a capacitor in an LC circuit.
Text Box: LC Oscillations, Damped (Slow)

Looking at the resonance of an LRC circuit.

Resonance, Electrical
Text Box: Aluminum rings repel each other when a current is applied to a large solenoid below them. Discussion of how this can occur follows.

Repelling Rings

Tesla coil using alternating current

Tesla Coil (AC)

Differences in AC Tesla coil versus direct current.

Tesla Coil (DC)