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 ...

(Our planet's magnetic field should look a lot like the field around a bar magnet, but electrically charged particles in the solar wind push against the magnetic field, so the side pointing away ...

If you need help visualizing magnetic fields, these slow-motion video captures ... for a person used to a bar magnet. We should advise you before you watch the video below the break, if you ...

Reader Jayant Bhalerao, a college physics instructor, found the story useful in class: “We will share it with our students, so that they can appreciate how ...

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 ...

Many people will remember experiments in school with iron filings and bar magnets to unveil their magnetic field. It's not quite so easy to capture the magnetic field of the Milky Way though.

Get Instant Summarized Text (Gist) Micrometer-sized, flower-shaped structures made of a nickel-iron alloy can locally enhance magnetic fields by concentrating field lines at their center. The ...