In the year 1820, a pivotal moment in science emerged when Danish physicist Hans Christian Ørsted made an astonishing ...

Magnetic rocks with iron oxide concentrations act as natural chroniclers of Earth's past continental movements. Using small samples of rocks, scientists can isolate magnetic grains that were frozen in ...

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 ...

In 1820, Hans Christian Ørsted serendipitously discovered the link between electricity and magnetism during a classroom ...

April 14, 2012 Add as a preferred source on Google Add as a preferred source on Google If you're hiking or exploring the wilds and you lose or bust your compass you can make a rudimentary compass by ...