If it faced east before, the needle will now face west. The built-in magnetometer in a smartphone might not always react quite as sensitively or as predictably to the magnetic field around the ...

When you ran the needle along the magnet in the same direction, you were making the needle itself magnetic. Many metals contain small clusters of material that are like tiny magnets, but normally ...

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 ...

They can thus clump together, or line up like a needle along the filament. The bacterium can then use the structure to swim along with the orientation of the planet’s magnetic field, and quickly reach ...

It is known to those who have devoted attention to thejiip of the magnetic needle, in surveying or otherwise, that there is a diurnal variation or disturbance of its action, as was clearly set ...

2, 1815 - 1830 On the Dip of the Magnetic Needle in Lon... On the Dip of the Magnetic Needle in London, in August, 1828. [Abstract] This is the metadata section. Skip to content viewer section.