How Gravity Works
- Thread starter darkbeaver
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A Magnetic Problem with “Protogalaxies”
Feb 09, 2010
It seems that it doesn’t matter how far out in space we choose to observe, there are galaxies, fully formed galaxies organized in higher level structures that stretch for billions of parsecs.
Quasar Clusters
Feb 08, 2010
Twenty-one quasars with similar redshifts cluster in a three-degree diameter area of the sky.The quasar density is nearly six times the density of the nearby areas. At their Hubble distance, which assumes that their distance is proportional to their redshift, they would occupy a region of space over 800 million light-years in diameter. In comparison, the Virgo Cluster of galaxies, the largest nearby cluster, is estimated to be only 9 million light-years across.
Near the apparent center of the cluster lies the relatively nearby active galaxy AM2230-284. According to the Hubble relationship, the cluster is about 13 billion light-years beyond it. Its presence near the center of the cluster is merely a coincidence.
In a recent paper, astronomer Halton Arp and two colleagues analyzed the dispersion of redshifts in the cluster in relation to that of the AM galaxy. They removed the active galaxy’s redshift from that of the quasars, transforming the quasars’ redshifts to the rest frame of the galaxy. In consequence, th
Quasar Clusters
Friday, February 26, 2010
The First Test That Proves General Theory of Relativity Wrong
A spinning top increases its weight much more than expected
According to Einstein's theory of general relativity, a moving mass should create another field, called gravitomagnetic field, besides its static gravitational field. This field has now been measured for the first time and to the scientists' astonishment, it proved to be no less than one hundred million trillion times larger than Einstein's General Relativity predicts.
This gravitomagnetic field is similar to the magnetic field produced by a moving electric charge (hence the name "gravitomagnetic" analogous to "electromagnetic"). For example, the electric charges moving in a coil produce a magnetic field - such a coil behaves like a magnet. Similarly, the gravitomagnetic field can be produced to be a mass moving in a circle. What the electric charge is for electromagnetism, mass is for gravitation theory (the general theory of relativity).
A spinning top weights more than the same top standing still. However, according to
Einstein's theory, the difference is negligible. It should be so small that we shouldn't even be capable of measuring it. But now scientists from the European Space Agancy, Martin Tajmar, Clovis de Matos and their colleagues, have actually measured it. At first they couldn't believe the result.
"We ran more than 250 experiments, improved the facility over 3 years and discussed the validity of the results for 8 months before making this announcement. Now we are confident about the measurement," says Tajmar. They hope other physicists will now conduct their own versions of the experiment so they could be absolutely certain that they have really measured the gravitomagnetic field and not something else. This may be the first empiric clue for how to merge together quantum mechanics and general theory of relativity in a single unified theory.
"If confirmed, this would be a major breakthrough," says Tajmar, "it opens up a new means of i
"The First Test That Proves General Theory of Relativity Wrong "
But the general relativity theory wasn't proven wrong. It was only shown to underestimate the effect. It's things written in such stupid manners like this that gives the entire article cause to be doubted.
This is like saying the theory of evolution is wrong because someone found a human skeleton dating back to 300,000 years ago. The theory isn't wrong, just a quantifiable part of it is wrong.
But the general relativity theory wasn't proven wrong. It was only shown to underestimate the effect. It's things written in such stupid manners like this that gives the entire article cause to be doubted.
This is like saying the theory of evolution is wrong because someone found a human skeleton dating back to 300,000 years ago. The theory isn't wrong, just a quantifiable part of it is wrong.
The original story, from a somewhat more reputable source: Gravity's secret - physics-math - 11 November 2006 - New Scientist
Reverend Sinister, how nice to see you out and about. Relativity is dead man, killed by Germans. Spacetime is religious nonsense, bending and twisting it is delusional. However if you have a magnetic field and a big chunk of rock. Time does not exist Sinister,only the acolytes mind can be bent and twisted.:lol:
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You forgot your rattle and the chicken blood.
No I didn't Anna you just didn't see. Soon you will develope really big arse boils and your feet well start to smell really really bad.:lol:
Now that you mention it, I remember smelling something rotten when I drove by your place the other day. But the windows did sparkle alright.
Oh? Musta been the sun glinting off the wet spots on the sticks then. And that would explain the strength of the odor emanating from it.