In mechanics and physics, Hooke's law of elasticity is an approximation that states that the extension of a spring is in direct proportion with the load applied to it. Many materials obey this law as long as the load does not exceed the material's elastic limit. Materials for which Hooke's law is a useful approximation are known as linear-elastic materials. Hooke's law, in simple terms, says that stress is directly proportional to strain.
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Stop to notice the technology - by Dan Davis Keeping your nose to the grindstone could prevent you from noticing the rapid changes occurring in the world around you.
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