| newtonian | Of or pertaining to Sir Isaac Newton, or his discoveries. Newtonian philosophy, the philosophy of Sir Isaac Newton; applied to the doctrine of the universe as expounded in Newton's "Principia," to the modern or experimental philosophy (as opposed to the theories of Descartes and others), and, most frequently, to the mathematical theory of universal gravitation. <astronomy> Newtonian telescope, a reflecting telescope, in which rays from the large speculum are received by a plane mirror placed diagonally in the axis, and near the open end of the tube, and thrown at right angles toward one side of the tube, where the image is formed and viewed through the eyeplace. Newtonian theory of light. See Note under Light. Source: Websters Dictionary (01 Mar 1998) |
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| newtonian aberration | When using white light through a lens system, it is inevitable that different wave lengths (colours) are brought to a focus at slightly different points. As a consequence, there are chromatic aberations in the image, good microscope objectives are therefore corrected for this at two wave lengths (achromats) or at three wave lengths (apochromats), as well as for spherical aberration. (18 Nov 1997) |
| Newtonian constant of gravitation | A universal constant relating the gravitational force, f., attracting two masses, m1 and m2, toward each other when they are separated by a distance, r, in the equation: f = G(m1m2/r2); it has the value of 6.67259 × 10-8 dyne cm2 g-2 = 6.67259 × 10-11 m3 kg-1 s-2 in SI units. (05 Mar 2000) |
| newtonian flow | The type of flow characteristic of a newtonian fluid. (05 Mar 2000) |
| newtonian fluid | A fluid in which flow and rate of shear are always proportional to the applied stress; such fluid precisely obeys Poiseuille's law. Compare: non-newtonian fluid. (05 Mar 2000) |
| newtonian viscosity | The viscosity characteristics of a newtonian fluid. (05 Mar 2000) |
| non-Newtonian fluid | <chemistry, physics> A fluid in which the viscosity varies depending upon the shear stress. The effect can arise because of alignment of nonspherical molecules as flow is established or because of suspended deformable particles as in blood. It relates to a fluid in which flow and rate of shear are not always proportional to the applied stress and which does not obey Poiseuille's law. See: anomalous viscosity, Fahraeus-Lindqvist effect, Bingham plastic. Compare: newtonian fluid. (21 Jun 2000) |
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| newtonian a. |
chromatic a.
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| newtonian c. of gravitation |
gravitational c.
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| newtonian | a follower of Isaac Newton |
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| newtonian | of or relating to or inspired by Sir Isaac Newton or his science |
| newtonian | the branch of mechanics based on Newton's laws of motion |
| newtonian | reflecting telescope in which the image is viewed through an eyepiece perpendicular to main axis |
| newtonian | reflecting telescope in which the image is viewed through an eyepiece perpendicular to main axis |
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