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Unexplainable things [Copy link] 中文

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Post time 2014-9-16 23:49:07 |Display all floors
Gravity

We pointed it out in 1687, but have yet to find the particle that causes it. And although it keeps entire galaxies together, it’s still a very weak fundamental force, which makes it hard to study.




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Post time 2014-9-16 23:49:58 |Display all floors
Turbulence

The bumpy ride on your flight is actually extremely hard to figure out, since the pressure and conditions prevent clear study of what causes it.



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Post time 2014-9-16 23:50:53 |Display all floors
Cats Purring

There is no purring organ in a cat, and it’s also been shown that cats don’t have to be happy to purr. There is a theory that a purr is at the exact frequency that will promote healing, so cats might be even more superhero than we thought.



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Post time 2014-9-16 23:52:00 |Display all floors
Sleep Jerks

When you feel like you’re falling and slam awake, that’s called a hypnic jerk, and we still don’t know where they come from. One theory says that it’s leftover from when we used to sleep in trees away from predators, in order to keep us from falling, but there is no real evidence behind that.



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Post time 2014-9-16 23:53:08 |Display all floors
Magnets

It turns out ICP was onto something when they asked how they work. We know what magnetism is, but we don’t really understand why it happens, nor do we get why they align themselves with a North and South Pole.



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Post time 2014-9-16 23:54:03 |Display all floors
Giraffe’s Long Necks

People generally think that giraffes survived by eating the higher leaves on trees, but there are plenty of leaves on the lower parts of the trees and their clumsy necks are actually a disadvantage in the wild.



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Post time 2014-9-16 23:54:45 |Display all floors

Birds Migrating

We know they do this to have their young and avoid cold weather, but we don’t know how different species of birds know exactly where to go. Birds may use the Earth’s also unexplained magnetic fields to navigate, but that can only give direction, and not exact locations.



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