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 ...

There are organisms that can use the magnetic field of the earth to navigate, including animals like honey bees and migratory birds, and some bacteria. Scientists have now learned more about how a ...

Amazing Tricks With Magnets 5 Awesome Tricks With Magnets Tricks from this video: 1. Homemade compass. For this trick you ...

Atomic physicists “are jacks of all trades,” according to Alex Sushkov. “You have to have the idea, design the experiment, build the experiment, run the experiment, fix everything, take data, analyze ...

A compass needle is essentially a thin bar magnet. If it were free to move in all three dimensions, a magnet would line up along any local magnetic field line. Field lines are graphical ...

Quick – can you tell where north is? Animals as diverse as sea turtles, birds, worms, butterflies and wolves can, thanks to sensing Earth’s magnetic field. But the magnet-sensing structures inside ...