How Can A Bullet-proof Vest Stop A Bullet?
Here's an experiment: take the small coil springs from a dozen or so retractable pens and roll them together in a heap until they are thoroughly tangled and entwined. Now try to pull them apart from end to end. You should find them extremely difficult to pull…
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More science facts
Biology
The Science of Tears
When was the last time you had a good cry? Tears do a lot more than show how we feel, and scientists have…
Engineering
Making Cars Out of Soup
There was an old TV show set on a spaceship some time in the future which included a machine about the size of…
Medicine
Resistance is NOT Futile!
Maybe if you are a Star Trek heroine up against the Borg, 'resistance is futile.' But if you are a germ that…
Mathematics
How To Calculate The Area Of A Cylinder
Understanding how to find the area of a cylinder is easy if one first visualizes the cylinder and breaks its…