Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Mordehai Milgrom


Related Topics

In the News (Wed 9 Dec 09)

  
  Learn more about Modified Newtonian dynamics in the online encyclopedia.   (Site not responding. Last check: 2007-11-06)
In 1989, Mordehai Milgrom, a physicist at the Weizmann Institute in Israel, proposed a modification of Newton's second law of motion.
In search for observations that would validate his theory, Milgrom noticed that a special class of objects, the low surface brightness galaxies (LSB) are of particular interest: the radius of a LSB is large compared to its mass, and thus almost all stars are within the flat part of the rotation curve.
Milgrom thus could make the prediction that LSBs would have a rotation curve essentially flat, and with a relation between the flat velocity and the mass of the LSB identical to that of brighter galaxies.
www.onlineencyclopedia.org /m/mo/modified_newtonian_dynamics.html   (2612 words)

  
 Modified Newtonian dynamics - Wikipedia, the free encyclopedia
In 1983, Mordehai Milgrom, a physicist at the Weizmann Institute in Israel, published two papers on the Astrophysical Journal to propose a modification of Newton's second law of motion.
As Milgrom proved in his original paper, the form of µ does not change most of the consequences of the theory, such as the flattening of the rotational curve.
Since Milgrom's theory first appeared in 1983, the most accurate data has come from observations of distant galaxies and neighbors of the Milky Way.
en.wikipedia.org /wiki/Modified_Newtonian_dynamics   (2737 words)

  
 The MOND Literature
Milgrom, M. A modification of the Newtonian dynamics as a possible alternative to the hidden mass hypothesis
Milgrom, M. Modified dynamics predictions agree with observations of the HI kinematics in faint dwarf galaxies contrary to the conclusions of Lo, Sargent, and Young
Milgrom, M. On stability of galactic disks in the modified dynamics and the distribution of their mean surface brightness
www.astro.umd.edu /~ssm/mond/litsub.html   (3846 words)

  
 Modified Newtonian dynamics Article, ModifiedNewtoniandynamics Information   (Site not responding. Last check: 2007-11-06)
Since 1989 and the outcome of Milgrom's theory, the most accurate data has come from observation of distant galaxiesand neighbors of the Milky Way.
In search for observations that would validate his theory, Milgrom noticed that a special class of objects, the low surfacebrightness galaxies (LSB) are of particular interest: the radius of a LSB is large compared to its mass, and thus almost allstars are within the flat part of the rotation curve.
Milgrom thus could make the prediction that LSBs would have a rotation curve essentially flat, and with a relationbetween the flat velocity and the mass of the LSB identical to that of brighter galaxies.
www.anoca.org /mond/theory/modified_newtonian_dynamics.html   (2490 words)

  
 Article 1
The idea, called MOND (for Modified Newtonian Dynamics), was proposed back in 1983 by physicist Mordehai Milgrom, now at the Weizmann Institute of Science in Rehovot, Israel.
Milgrom had seen the data like everyone else, but instead of thinking about new kinds of matter, he decided to question the physical laws that describe how ordinary matter behaves.
The laws in question are the law of gravity and Newton's second law, f = ma, which simply tells us that the amount of force you need to accelerate a mass increases linearly as you increase the mass or its acceleration.
www.physics.odu.edu /~weinstei/120f03/astro10.html   (1937 words)

  
 The Science of Science - Nicholas Astete
For instance, Milgrom points outs that two scientists who had developed an elegant explanation to counter MOND had based their work on "crude approximations that disagree with observed dark matter halos and with detailed numerical simulations of dark matter behavior" (Milgrom 52)—and as such, their graceful yet flawed counter-theory could not sustain itself.
Milgrom demonstrates how Mach's principle might arise from MOND's framework due to a particle's interactions with the vacuum of space (Milgrom 52).
Milgrom even opposes any sort of complacent reliance on his own theory, highlighting MOND's possible shortcomings (50) and concluding that "although people are right to be skeptical about MOND, until definite evidence arrives for dark matter or for one of its alternatives, we should keep our minds open" (52).
depts.washington.edu /engl/ewp/eg/03.AsteteN.html   (1684 words)

  
 Mordehai Milgrom - Encyclopedia Glossary Meaning Explanation Mordehai Milgrom   (Site not responding. Last check: 2007-11-06)
Mordehai Milgrom - Encyclopedia Glossary Meaning Explanation Mordehai Milgrom.
Here you will find more informations about Mordehai Milgrom.
The orginal Mordehai Milgrom article can be editet
www.encyclopedia-glossary.com /en/Mordehai-Milgrom.html   (124 words)

  
 Physics: Dark Matter, Dark Energy and Theory
Mordehai Milgrom in "Does Dark Matter Really Exist," Scientific American, August 2002.
Milgrom is quick to point out that the MOND theory has its own set of problems, which he and other scientists are working on.
Here is an interview with physicist Mordehai Milgrom who proposed the model in 1983.
www.p-i-a.com /Magazine/Issue18/Physics_18.htm   (821 words)

  
 MOND   (Site not responding. Last check: 2007-11-06)
It is an alteration to Newton's law of gravity, made to fit the observations of galactic movement and to do away with the dark matter problem.
It was first proposed by Mordehai Milgrom in 1983.
The fact that it agrees with observations doesn't necessarily mean it is grounded in reality; rather, that it predicts what it was designed to predict and nothing more..
ffden-2.phys.uaf.edu /211_fall2002.web.dir/rodney_guritz/mondmain.htm   (328 words)

  
 Comments to: The Myth Of Dark Matter - Can Science Change? - Health Supreme
Don't know much about the other dark matter theory, but a couple of years ago I used the research of Mordehai Milgrom to find the math behind the dark matter question.
The math for this is part of my website and most of what is there would apply even if the reader were not a believer in an ether.
However, mainstream physicists have not arrived at such a logical conclusion yet.   Milgrom theorizes that dark matter does not exist and that its apparent existence is a consequence of Newton's second law changing at certain distances from galactic centers.
www.newmediaexplorer.org /cgi-bin/mt-comments.cgi?entry_id=1643   (296 words)

  
 [No title]
This article is by one of those so-called "mavericks" of science, named Mordehai Milgrom.
Anyway, this Milgrom fellow is proposing that Newton is even wronger than Einstein thought.
But oddly enough, Milgrom has the respect of the scientific community, even when they don't agree with him.
dev.perl.org /perl6/talks/2002/onion2002/2002.txt.htm   (4535 words)

  
 [No title]   (Site not responding. Last check: 2007-11-06)
In the absence of a conventional explanation, physicists have produced speculative alternatives.
Mordehai Milgrom of the Weizmann Institute of Science near Tel Aviv in Israel, for example, has developed a modified version of classical gravity in which the strength of the gravitational field decreases more slowly than newtonian theory suggests.
Milgrom produced his theory to account for discrepancies in the motion of galaxies, an effect normally attributed to the presence of dark matter, but physicists have pointed out that it could also account for the Pioneer anomaly.
www.nature.com /news/2004/040927/pf/431494b_pf.html   (528 words)

  
 [No title]   (Site not responding. Last check: 2007-11-06)
The first approach was to build a very basic working model of astrophysical masses and their interactions.
The Java programmer initially made two versions of the simple program: one using standard gravitational equations, and the other with Modified Newtonian Dynamics, an alternate gravitational theory to dark matter proposed by Mordehai Milgrom, although both were devoid of dark matter itself and of any realistic parameters, containing no more than 20 masses at once.
He then experimented with the graphical rendering of these models, as the masses had a habit of getting too close to one another and zooming off the visible screen.
www.challenge.nm.org /Interims/028.html   (558 words)

  
 Modified Newtonian Dynamics and the physics aesthetic
I suppose it's due to the recent SciAm cover story on MOND by Milgrom himself.
It's also quite alarming that this page is the #1 hit on a Google search for "modified newtonian dynamics." So even though I'm a linguistics student now, I'm compelled to put this up.
Mordehai Milgrom proposed the idea of modified dynamics as a solution to the hidden matter problem- all the way back in 1983.
www.physics.rutgers.edu /~juxian/mond.html   (745 words)

  
 Modified Newtonian dynamics   (Site not responding. Last check: 2007-11-06)
In his paper, Milgrom arranged the typical acceleration of various physical process in a two-dimensional diagram (see figure 3).
The most successful relativistic version of MOND, which was proposed in 2004, is known as "TeVeS" for Tensor-Vector-Scalar and was proposed by fl hole physicist and Milgrom associate Bekenstein.
It is currently receiving scholarly review in the field.
www.worldhistory.com /wiki/M/Modified-Newtonian-dynamics.htm   (2719 words)

  
 Cosmology's Missing Mass Problems - Part 2
Descartes idea that gravity operates by corpuscles and vortices might be applicable to the problem.
MOND is a modification of the usual Newtonian force law, hypothesized in 1983 by Moti Milgrom of the Weizmann Institute, as an alternative to Dark Matter.
It explains the flat rotation curves of some* spiral galaxies without resorting to the use of dark matter.
www.ebicom.net /~rsf1/missmas2.htm   (1298 words)

  
 Works Cited - A MOND Project by Pamela Bingcang   (Site not responding. Last check: 2007-11-06)
Bekenstein, J. & Milgrom, M. "Does the missing mass problem signal the breakdown of Newtonian gravity?"
One of the earliest articles focusing on MOND, Jimmy and Moti discuss solutions for the MOND field equations with proofs and derivations in the appendices for your obsessive-compulsive pleasure.
"Milgrom's revision of Newton's Laws - Dynamical and cosmological consequences"
www.physics.rutgers.edu /~juxian/WorksCited.html   (347 words)

  
 Spacecraft anomalies put gravity to the test (January 1999) - Physics World - PhysicsWeb
Such a finding, if it were not explained away by some mundane effect, would be a major break with accepted physics.
Mordehai Milgrom in the Department of Condensed Matter Physics, Weizmann Institute, Israel, discusses the implications of this anomaly in the January issue of Physics World magazine.
Register or sign in to our news alerting service or to alter your alert settings
physicsweb.org /article/world/12/1/5   (306 words)

  
 Ebtx - Letter to The Physical Review & Email to Dr.Milgrom   (Site not responding. Last check: 2007-11-06)
Perhaps my day will come before western civilization decays one or two centuries from now.
This is email that I sent to Dr. Mordehai Milgrom 7/19/99 in the remote hope of getting feedback of some sort.
I thought that he might be a possiblility because he has proposed the unpopular MOND theory (ca.1983) which conjectures a slight alteration of Newton's gravitational theory at large distances instead of any hypothetical dark matter which nobody seems to be able to find...
ebtx.com /ntx/ntx16b.htm   (2873 words)

  
 Gravity   (Site not responding. Last check: 2007-11-06)
The possibility of new physics has not been ruled out, despite very thorough investigation in search of a more prosaic explanation.
In the modified Newtonian dynamics (MOND), Mordehai Milgrom proposes a modification of Newton's Second Law of motion for small accelerations.
Nikola Tesla challenged Albert Einstein's theory of relativity, announcing he was working on a Dynamic theory of gravity (which began between 1892 and 1894) and argued that a "field of force" was a better concept and focused on mediums with electromagnetic energy that fills all of space.
www.free-download-soft.com /info/gravity.html   (4600 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.