Introduction Have you ever wondered how a compass works? Traditional compasses (not the digital kind found in smart phones and other devices) are tools that take advantage of a natural feature of ...

At some point during our primary school careers, most of us probably constructed a simple compass, often by floating a magnetized needle on a cork in a cup of water. The water in such a configuration ...

"Magnetotactic" microorganisms use a miniature, cellular compass made of a chain of single nanomagnets, called magnetosomes. The entire bacterium is oriented like a compass needle inside the magnetic ...

If shrunken down to micron size, a compass needle could wobble. (Courtesy: iStockphoto/tobias machhaus) A tiny magnetic needle just 10 μm long could be used to create a magnetic-field sensor that – if ...

Here's how to make a magnetic compass that points north using the amazing invisible force of magnetism. And there are only a few things that we need:A long large needle, a piece of cork carefully ...