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 ...

Chorus waves are mysterious, chirping signals produced by spiraling plasma inside our planet's magnetic field. But a new ...

How a Generator Works When an electric current flows through a wire, it generates a three-dimensional magnetic force field around the wire, similar to that surrounding a bar magnet. Magnets are ...

Earth's magnetic field. Earth Planet with magnet, geographic and geomagnetic poles. Vector diagram earth magnetic field stock illustrations vector illustration of magnetic field lines around a bar ...

If you need help visualizing magnetic fields ... the intertwining fields of multiple magnets can be beautiful. Perhaps a helix of spherical magnets? What do you have lying around the hosue?

Abstract: Theoretical values of the magnetic field intensity outside a permanent ... approximation for practical problems involving cylindrical bar magnets. Measurements are reported for the field of ...

Hold the poster board at a slight angle, and then move a paper clip on top of the poster board by holding a bar magnet ... paper clips). The magnetic field around the magnet can cause certain ...

This happens every 300,000 years or so on average, with the last one occurring around 780,000 ... Our planet’s magnetic field ...

Magnetic fields lines are invisible but they fill the space around a magnet where the magnetic forces work on magnetic materials, and where they can attract or repel other magnets. Although we ...

Strong magnetic fields are created by superconducting magnets. These fields can affect ferromagnetic objects and surgical implants, so precautions must be taken when you are near an NMR. Attractive ...