During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed.

That is, unless you’ve got one of these nifty magnetic field ... able to track the poles of a magnet in real-time and produce an approximation of what the field lines would look like on its ...

Bar magnets and horseshoe magnets are two of the most common shapes of magnet. The magnetic field is shown by lines with arrows that point from north to south. You can tell how old some coins are ...

Yes, it will create an image of field lines coming out of a magnet, but it’s a very slow process. Instead of using just one magnetic sensor, [Peter] is building a two-dimensional array of ...

The magnetic north pole, meanwhile, is the point in the Northern Hemisphere where Earth's magnetic field lines point directly ... than that of a regular bar magnet, the magnetic south pole ...

Ancient Homo sapiens may have benefited from sunscreen, tailored clothes and the use of caves during the shifting of the ...

Controlling magnetism in a device is not easy; unusually large magnetic fields or ... A small applied electric field causes the electric dipoles to line up in the same direction, transforming ...

the angle at which magnetic field lines intersect the Earth. The turtles use these two pieces of information, which vary at every point on the planet's surface, as navigational markers that help ...

More information: Satoshi Ohashi et al, Observationally derived magnetic field strength and 3D components in the HD 142527 ...