Clip description Keywords
An introduction to magnetism
An introduction to magnetism

Duration: 00:59

An introduction to magnetism and how to find out which metals are magnetic.

 
Cow Compas
Cow Compas

Duration: 02:11

Taking aerial pictures of cows in a field to see of they are aligned with the Earth's magnetic field in a north/south direction.

 
Cow-spotting
Cow-spotting

Duration: 00:40

Do cows orientate themselves to the Earth's magnetic field?

 
Cows align with the Earth's magnetic field
Cows align with the Earth's magnetic field

Duration: 05:30

Research scientists have discovered that cows align themselves with the Earth's magnetic field.

 
Electromagnets
Electromagnets

Duration: 01:49

How to build an electromagnet and increase the magnetic force by altering the design.

 
Magnetic Field?
Magnetic Field?

Duration: 00:38

Aerial pictures of cows in fields are analysed to see if there is a relationship between their orientation and the Earths magnetic field.

 
Magnetism and magnetic poles
Magnetism and magnetic poles

Duration: 01:15

A demonstration of the laws of magnetism and magnetic poles.

 
Moo-Monitor
Moo-Monitor

Duration: 00:28

Do cows align with the earths magnetic field?

 
The 3D magnetic field of a bar magnet
The 3D magnetic field of a bar magnet

Duration: 01:51

Iron filings are used to demonstrate the shape of the lines of force and the 3D magnetic field around a bar magnet. Electromagnets are also introduced.

 
The effect of copper on magnets
The effect of copper on magnets

Duration: 01:07

A practical demonstration showing the effect the non-magnetic metal copper has on magnets.

 
The magnetic compass and aviation
The magnetic compass and aviation

Duration: 02:51

A description of the magnetic compass, its use for navigation in aircraft and how the compass is protected from stray magnetic fields.

 
Uses of strong magnets
Uses of strong magnets

Duration: 02:03

An explanation of how very strong magnets are used to hold workmen onto large steel structures.

 

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