Bicycle Chain for Fleas
Sandia National Laboratories has engineered the world’s smallest chain. The distance between chain link centers is only 50 microns. In comparison, the diameter of a human hair is approximately 70 microns. This micro-chain has been made on the surface of a…
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Physics
Sonic Boom
They sound like thunder, but they're not. They're sonic booms, concentrated blasts of sound waves created as…
Medicine
It's Hay Fever Season!
If spring's flying pollen is making you sneeze, you are not alone. Some 40 to 50 million people in the United…
Astronomy
The Kuiper Belt
The Kuiper (pronounced Ki-Per) Belt is often called our solar system's 'final frontier.' This disk-shaped…
Biology
Batesian Mimicry
If you had ever been stung by a wasp, you would probably steer clear of any insect with bright yellow and…