Modified Newtonian Dynamics


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Modified Newtonian Dynamics

n. Abbr. MOND
A variation of Newton's laws of motion, developed to explain the relatively constant orbital velocity of stars around the center of a galaxy without hypothesizing the existence of dark matter, in which force is not directly proportional to mass times acceleration when the accelerations are very small, having instead a lower value.
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These observations, consistent with simple modified Newtonian dynamics, can be accommodated within the standard cold dark matter paradigm.
Alternative theories include Modified Newtonian Dynamics, or MOND.
His Modified Newtonian Dynamics (MOND) is an empirical correction of Newton's laws of gravity and inertia, proposed as an alternative to dark matter.
Yet predictions made using the alternative hypothesis Modified Newtonian Dynamics (MOND) succeeded in anticipating the observations.
That's the case in this issue, where you'll find (beginning on page 30) an article about Modified Newtonian Dynamics.
In an alternative theory, called modified Newtonian dynamics, or MOND, forces such as gravity would produce small accelerations in addition to that which standard Newtonian physics predicts.
One of these is Modified Newtonian Dynamics (MOND), which was hypothesized in 1983 by Moti Milgrom a physicist at the Weizmann Institute of Science in Rehovot, Israel.
Accordingly, (i) the fate of the dark matter particle(s) theories as well as (ii) the fate of their competing theories of modified Newtonian dynamics (MOND [4]) are likely to follow the fate of the eighteenth century phlogiston theory and the nineteenth century luminiferous ether theory, which were initiated as ad hoc postulates and which, subsequently, became obsolete.
Twenty-five years ago Milgrom conceived Modified Newtonian Dynamics (MOND), a radical idea that gravity's behavior changes over galaxy-scale distances.
Three interesting possible explanations for galactic rotation curves have been proposed: (1) the dark matter hypothesis (DM) introduces non-baryonic matter that is insensitive to all interactions except gravitation, but there has been no detection of any possible form of dark matter; (2) a modified Newtonian dynamics (MOND) effective at all distance scales when the accelerations are less than 1.
His theory of Modified Newtonian Dynamics (MOND) has attracted a small but dedicated group of followers, and in recent years they have made impressive calculations that explain galaxy motions while invoking only small quantities of dark matter.

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