Friction

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Friction
Friction is the force of two surfaces in contact. It is not a fundamental force, as it is derived from electromagnetic forces between atoms. When contacting surfaces move relative to each other, the friction between the two objects converts kinetic energy into thermal energy, or heat. Friction between solid objects is often referred to as Dry Friction and frictional forces between two fluids (gases or liquids) as Fluid Friction. In addition to these there is also Internal Friction which illustrates a body's ability to recover from external deformation. Contrary to popular belief, sliding friction is not caused by surface roughness, but by chemical bonding between the surfaces. Surface roughness and contact area, however, do effect sliding friction for micro- and nano-scale objects where surface area forces dominate inertial forces.
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Frottement
Les frottements sont des interactions qui s'opposent à la persistance d'un mouvement relatif entre deux systèmes en contact.
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Tribologie
Le mot tribologie, construit à partir des racines grecques tribein (frotter) et logos (discours, étude), a été proposé en 1968 par G. Salomon pour désigner la science qui étudie les phénomènes susceptibles de se produire entre deux systèmes matériels en contact, immobiles ou animés de mouvements relatifs. Il recouvre, entre autres, tous les domaines du frottement, de l’usure et de la lubrification.
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Reibung
Reibung (auch Friktion) ist die Gesamtheit der Kräfte an der Grenzfläche zweier Körper, die ihre gegenseitige Bewegung hemmen oder verhindern.
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Tarcie (pojecie fizyczne)
Tarcie (pojęcie fizyczne) (opory ruchu) to całość zjawisk fizycznych towarzyszących przemieszczaniu się względem siebie dwóch ciał fizycznych (tarcie zewnętrzne) lub elementów tego samego ciała (tarcie wewnętrzne) i powodujących rozpraszanie energii podczas ruchu.Tarcie zewnętrzne występuje na granicy dwóch ciał stałych. Tarcie wewnętrzne występuje przy przepływie płynów, jak i deformacji ciał stałych, pomiędzy obszarami przemieszczającymi się względem siebie.Siła występująca w zjawiskach tarcia nazywana jest siłą tarcia.
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Attrito
L'attrito (o forza d'attrito) è una forza dissipativa che si esercita tra due superfici a contatto tra loro e si oppone al loro moto relativo. La forza d'attrito che si manifesta tra superfici in quiete tra loro è detta di attrito statico, tra superfici in moto relativo si parla invece di attrito dinamico.
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