# Newton, Sir Isaac

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## Newton,

Sir Isaac, English physicist, 1642-1727.**newton**- derived unit of force in the SI system.

**Newton disk**- a disk on which there are seven colored sectors, which, when rapidly rotated, appear white.

**Newton law**- the attractive force between any two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between their centers. Synonym(s):

**law of gravitation**

**Newton rings**- colored rings on thin surfaces.

**newtonian aberration**- the difference in focus or magnification of an image arising because of a difference in the refraction of different wavelengths composing white light. Synonym(s):

**chromatic aberration**

**newtonian constant of gravitation**- a universal constant relating the gravitational force, attracting two masses toward each other when they are separated by a distance.

**newtonian flow**- the type of flow characteristic of a newtonian fluid.

**newtonian fluid**- a fluid in which flow and rate of shear are always proportional to the applied stress.

**newtonian viscosity**- the viscosity characteristics of a newtonian fluid.

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