This video might look fake, but it’s only exploiting capillary action and magnetism. Watch it first, then read on.
The big black ball at the center is a magnet and the black fluid is just a ferrofluid, i.e., a liquid that becomes magnetized in the presence of a magnetic field. More specifically, the liquid itself is made up of magnetic nanoparticles suspended in a solution. The action in the video comes from the ferrofluid being added to the bubbles away from the central magnet which then draws the fluid towards it through capillary action where the bubbles intersect. The orange color is just normal dye adding to the fun, because why let black have all the fun?
Speaking of fun, more geek for your week:
- What do your eyes have in common with the Hubble Space Telescope?
- One drop of venom from this snake will turn your blood into Jello. Or at least a really gross version of Jello. [WITH VIDEO]
- In advance of the return of the 17-year cicadas, read about this fungus that eats them from the inside out.
- Check out this amazing video of a mama river otter teaching her pup to swim. The lesson begins around 0:45.
- Baby lizards can hatch early if they sense danger is near.
- Weapons used in the South Pacific contain a history of sharks.
- Parachute of NASA’s Mars Curiosity rover still blowing in the martian wind.
- Japanese scientists can now see inside your dreams. Inception is one step closer.
- How plants sense gravity and know how to grow “up” regardless of orientation. [WITH VIDEO]
- Fluorescent millipedes discovered on Alcatraz.
Geek you later. @Summer_Ash