Then the question is, where is the universe expanding to. Is it going to go out with a Wimper, or a Bang??

All a question of Entropy and Information?


Keep searchin',
Martin

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See new freedom: Mageia Linux
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S=klnW is written on Ludvig Boltzmann's grave in Wien, so I was told. He killed himself in Duino, where Rainer Maria Rilke had written his "Elegies". Probably he felt misunderstood by his peers.
Now they say that entropy is proportional to the area of the surface of the events horizon surrounding a black hole. I wonder what Boltzmann would think of this.
Tullio

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S=klnW is written on Ludvig Boltzmann's grave in Wien, so I was told. He killed himself in Duino, where Rainer Maria Rilke had written his "Elegies". Probably he felt misunderstood by his peers.
Now they say that entropy is proportional to the area of the surface of the events horizon surrounding a black hole. I wonder what Boltzmann would think of this.
Tullio

A sad end on all counts.

The event horizon proportionality is also called the 'holographic limit to information'. That suggests that the Canadian quantum computer is an impossibility if it is supposed to be truly quantum... However, can they dodge the limits by claiming/ operating some form of fast superconductivity simulated annealing?...


Keep search in'
Martin

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See new freedom: Mageia Linux
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I just don't know enough to answer your question. But a friend of mine and former colleague at Elsag ,Genoa, Giuseppe Castagnoli, and prof. Mario Rasetti of Torino Polytechnic University have developed a method of "simulated annealing" already in the Nineties. An article on this subject was published jointly by Castagnoli and me in the Italian edition of MIT Technology Review in December 1996. Its title was 'Le altre dimensioni del problema" and it has a bibliography. I know that Castagnoli, now retired from Elsag, as I am, is still working on quantum computers.
Tullio

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How do you measure something that is invisible?



Can you match each galaxy in the top row with its warped counterpart in the bottom row? For example, is the warped version of galaxy A in box D, E, or F?

How do you measure something that is invisible? It's a challenging task, but astronomers have made progress on one front: the study of dark matter and dark energy, two of the most mysterious substances in our cosmos. Dark matter is intermixed with normal matter, but it gives off no light, making it impossible to see. Dark energy is even more slippery, yet scientists think it works against gravity to pull our universe apart at the seams.

http://www.nasa.gov/jpl/galaxy-20131126.html#.UphB8yfTDSc

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Those are 'too easy' by just looking for the mix of colours. Can not instruments do the same by looking at the spectrum counts?...


So... Is this a "Galaxy Zoo" follow-up to try to classify Einstein rings and other gravitational lensing?


Keep searchin',
Martin

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See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)

Elusive Dark Matter May Have Already Been Found...



http://www.space.com/23879-dark-matter-detection-discovery.html?utm_content=buffer2f14b&utm_source=buffer&utm_medium=google&utm_campaign=Buffer

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The LUX experiment (Large Underground Xenon) has found no trace of dark matter WIMPs (Weakly Interacting Massive Particles). So the question is still open.
Tullio

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According to this article, you are right Tullio.

http://arstechnica.com/science/2013/10/new-lux-experiment-no-dark-matter-in-this-corner/

Of course, this result isn't a definitive statement on the existence of dark matter, but it does put stronger constraints on what its identity could be. Dark matter could still lurk at lower mass ranges, or it could be non-WIMP in nature. The latter possibility includes the disturbing prospect that dark matter doesn't interact directly with normal matter at all, except through gravity, dooming every current detection scheme to failure.

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Julie, I stick to experimental facts. I am a physicist, even if retired, and I am against speculations.
Tullio

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I understand quite well Tullio

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rOZZ
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Julie, I stick to experimental facts. I am a physicist, even if retired, and I am against speculations.
Tullio

I had a feeling about you, Tullio. Good for you :-)

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Two thousand years ago, a Roman vessel with ingots of lead extracted from the Sierra of Cartagena sank across the waters from the coast of Sardinia. Since 2011, more than a hundred of these ingots have been used to build the 'Cryogenic Underground Observatory for Rare Events' (CUORE), an advanced detector of neutrinos- almost weightless subatomic particles- at the Gran Sasso National Laboratory in Italy.


Use of Roman ingots in 'dark matter and neutrinos study' sparks controversy

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Some say that the decline of the Roman Empire was also due to lead poisoning because lead was used in the Roman Aqueducts, some of which are still standing, although no longer used to bring water to people.
Tullio

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The lead that caused the problems was used as makeup

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In a rich man's house there is no place to spit but his face.
Diogenes Of Sinope

There was also a lot of lead in the drinking cups and containers their wine was stored in. I saw also that lead made the wine taste sweeter. Whatever this has to do with dark matter or dark energy is beyond me.

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

Even neutrinos have nothing to to with dark matter,leave alone dark energy.Lead is used to shield the neutrino detectors from radioactivity coming from the rocks, since neutrino detectors are situated underground or underwater as in ICECUBE.
Tullio

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Dark Matter Search Considers Exotic Possibilities:


http://www.scientificamerican.com/article.cfm?id=dark-matter-exotic-possibilities&utm_content=buffer7d357&utm_source=buffer&utm_medium=facebook&utm_campaign=Buffer

Physicists still have no proof that dark matter exists at all, but the evidence for it is substantial. The movements of stars and galaxies can apparently be explained only if there is much more gravitating matter in the universe than the visible stuff of atoms and molecules. Attempts to correct the discrepancy by rewriting the rules of gravity in Einstein's general theory of relativity have repeatedly failed.

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Dark Matter Search Considers Exotic Possibilities:


http://www.scientificamerican.com/article.cfm?id=dark-matter-exotic-possibilities&utm_content=buffer7d357&utm_source=buffer&utm_medium=facebook&utm_campaign=Buffer

Physicists still have no proof that dark matter exists at all, but the evidence for it is substantial. The movements of stars and galaxies can apparently be explained only if there is much more gravitating matter in the universe than the visible stuff of atoms and molecules. Attempts to correct the discrepancy by rewriting the rules of gravity in Einstein's general theory of relativity have repeatedly failed.

Thanks Julie.

Just because they can't see it doesn't mean it isn't there.

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Dark Matter Search Considers Exotic Possibilities:


http://www.scientificamerican.com/article.cfm?id=dark-matter-exotic-possibilities&utm_content=buffer7d357&utm_source=buffer&utm_medium=facebook&utm_campaign=Buffer

Physicists still have no proof that dark matter exists at all, but the evidence for it is substantial. The movements of stars and galaxies can apparently be explained only if there is much more gravitating matter in the universe than the visible stuff of atoms and molecules. Attempts to correct the discrepancy by rewriting the rules of gravity in Einstein's general theory of relativity have repeatedly failed.

Thanks Julie.

Just because they can't see it doesn't mean it isn't there.

I know Lynn, we're unraveling bits by bits...

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