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 ...

A team of physicists at the University of Cambridge has unveiled a breakthrough in quantum sensing by demonstrating the use ...

The creation of magnets involves a fascinating process that blends science and precision. It all begins with raw materials ...

Save guides, add subjects and pick up where you left off with your BBC account. A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron ...

Earth's magnetic field can be visualized if you imagine a large bar magnet inside our planet, roughly aligned with Earth's axis. Each end of the magnet lies relatively close (about 10 degrees ...

If Earth’s magnetic field resembles that of a bar magnet, Jupiter’s field looks like someone took a bar magnet, bent it in half and splayed it at both ends. The field emerges in a broad swath ...

The magnetic field around a circular loop of wire is similar to that of a bar magnet. When an electric current flows through the loop, it generates a magnetic field. Inside the loop, the magnetic ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Imagine a bar magnet inside Earth, more or less aligned with the axis, where the ends of ...

That magnet is strong, representing roughly 75 percent of the intensity of Earth's magnetic field at the surface. Of course, a bar magnet is not a perfect representation — it's actually electric ...

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 ...