The classic rules of sliding friction were discovered by Leonardo da Vinci

The classic rules of sliding friction were discovered by Leonardo da Vinci (1452-1519), but remained unpublished in his notebooks.[6][7] They were rediscovered by Guillaume Amontons (1699) and were further developed by Charles-Augustin de Coulomb (1785). Leonhard Euler (1707-1783) derived the angle of repose of a weight on an inclined plane and first distinguished between static and kinetic friction.[8] Arthur Morrin (1833) developed the concept of static friction. Osborne Reynolds (1866) derived the equation of viscous flow. This completed the classic model of friction (static, kinetic, and fluid) commonly used today in engineering.[6]

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Another important consequence of many types of friction can be wear, which may lead to performance degradation and/or damage to components. Friction is a component of the science of tribology.


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