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At a busy street crossing, people wait for the signal to change. When one person steps out first, others soon follow. Scientists in Amsterdam have found that this same kind of behavior happens at a ...

Researchers in China have isolated the effects of electronic friction, showing for the first time how the subtle drag force ...

Friction in human relations is all too obvious and prevalent, but friction in physics has had a "secret life" of its own that has now been revealed by scientists. Friction in human relations is all ...

Learn how to analyze tipping a block and calculating friction in this physics tutorial. Step-by-step explanations cover forces, torque, and frictional calculations, helping students understand the ...

Add Yahoo as a preferred source to see more of our stories on Google. Humans have been making fire by friction for centuries, but it's not easy. Cyndi Monaghan/Moment via Getty Images Fire by friction ...