This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...

The magnetic field lines of a bar magnet can be viewed by using compasses or by shaking iron filings onto a platform above the magnet. Place the magnet on top of the paper in view of the document ...

It shows how iron filings reveal the magnetic field around a magnet, how charged objects create electric fields that can attract materials, and how gravity creates a gravitational field that pulls ...

Earth has a magnetic field which appears very similar to a bar magnet that has a north and south pole. However, it is not comparatively stable since it gets generated by complex processes which ...

Please provide a copy to the radiation safety office. These procedures should include the PI's name, training requirements, specific postings, general lab precautions (removing metal objects, storing ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram at right). Likewise, a wire passing through a magnetic field creates an electric current ...

Such is the case with the Earth's magnetic field. Every so often, our planet's magnetic poles reverse polarity (see When Compasses Point South). Compass needles have always pointed north ...

(b) neutral wire. (c) earth wire. 3. Draw magnetic field lines around a bar magnet. Name the device which is used to draw magnetic field lines. 4. Why does a compass needle get deflected when ...

Geophysicist Daniel Lathrop wants, among other things, to use it to predict when the Earth’s magnetic field will next reverse. Over the course of our planet’s history, the field has flipped ...