Dark Matter evidence found at Chicago not HLC: 12/18/09

LivingDog
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RE: ... Let's hope it's

Message 96121 in response to message 96119

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...
Let's hope it's not like one of Terry Pratchett's conundrums - open this crate using the crowbar found inside!. :-)

Cheers, Mike.

Simple, shake the box hard. The crowbar inside will crack the box open.

-LD
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my faith

Mike Hewson
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RE: Simple, shake the box

Message 96122 in response to message 96121

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Simple, shake the box hard. The crowbar inside will crack the box open.


Doh !!! Well done :-)

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

Rod
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An Article in SciAm..

An Article in SciAm..

What is Dark Matter

I do not know to much about the subject. But evidence of Dark Matter existence seems indirect by it gravitational effects. For what its worth I get an impression that we don't know as much about gravity as we like to, and maybe other phenomena causes gravitational effects than matter.

There are some who can live without wild things and some who cannot. - Aldo Leopold

tullio
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RE: An Article in SciAm..

Message 96124 in response to message 96123

Quote:

An Article in SciAm..

What is Dark Matter

I do not know to much about the subject. But evidence of Dark Matter existence seems indirect by it gravitational effects. For what its worth I get an impression that we don't know as much about gravity as we like to, and maybe other phenomena causes gravitational effects than matter.


I've recently read an article on the NASA site that observations made by the Chandra X-ray satellite observatory on galaxies clusters confirm the validity of Einstein's general relativity even at great distances. Then the article did not appear any longer on the NASA site but I believe it can be found on the Chandra site. Here it is:
Chandra
Tullio

Rod
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RE: RE: An Article in

Message 96125 in response to message 96124

Quote:
Quote:

An Article in SciAm..

What is Dark Matter

I do not know to much about the subject. But evidence of Dark Matter existence seems indirect by it gravitational effects. For what its worth I get an impression that we don't know as much about gravity as we like to, and maybe other phenomena causes gravitational effects than matter.


I've recently read an article on the NASA site that observations made by the Chandra X-ray satellite observatory on galaxies clusters confirm the validity of Einstein's general relativity even at great distances. Then the article did not appear any longer on the NASA site but I believe it can be found on the Chandra site. Here it is:
Chandra
Tullio

Thanks tullio,
Here it is (I think)

Einstein's Theory Fights Off Challengers

The problem I have is with the Standard Model.. Where is all this anti-matter. The world spends a lot of money looking for particles based on this model.

There are some who can live without wild things and some who cannot. - Aldo Leopold

tullio
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RE: Thanks tullio, Here it

Message 96126 in response to message 96125

Quote:


Thanks tullio,
Here it is (I think)

Einstein's Theory Fights Off Challengers

The problem I have is with the Standard Model.. Where is all this anti-matter. The world spends a lot of money looking for particles based on this model.


AFAIK the physicists at Chicago and Geneva are not looking for dark matter but for particles predicted by the Standard Model and Supersymmetry. Dark matter was introduced by astronomers and elementary particle physicists are rather skeptical about its existence.
Tullio

Rod
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RE: RE: Thanks

Message 96127 in response to message 96126

Quote:
Quote:


Thanks tullio,
Here it is (I think)

Einstein's Theory Fights Off Challengers

The problem I have is with the Standard Model.. Where is all this anti-matter. The world spends a lot of money looking for particles based on this model.


AFAIK the physicists at Chicago and Geneva are not looking for dark matter but for particles predicted by the Standard Model and Supersymmetry. Dark matter was introduced by astronomers and elementary particle physicists are rather skeptical about its existence.
Tullio

The problem I am beginning to have with these machines is that we are spending 20 billon dollars on them not to explore but to validate a model. When these machines do not deliver, we tweak the math and spend more gobs of money in attempting to validate that. I do not know in depth the subject. I find the standard model very complex. And if theories explaining nature are complex, they are usually incorrect.

There are some who can live without wild things and some who cannot. - Aldo Leopold

tullio
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RE: The problem I am

Message 96128 in response to message 96127

Quote:

The problem I am beginning to have with these machines is that we are spending 20 billon dollars on them not to explore but to validate a model. When these machines do not deliver, we tweak the math and spend more gobs of money in attempting to validate that. I do not know in depth the subject. I find the standard model very complex. And if theories explaining nature are complex, they are usually incorrect.


Two Italian elementary particle physicists, Angelo Baracca and Silvio Bergia wrote a book in the Seventies expressing the same concern. Its title, "La spirale delle alte energie" referred to the particle's trajectory in cyclotron and the spiraling of both costs and energy in particle accelerators. I don't think it was ever translated in English also because it is a mixture of theoretical physics and marxist philosophy. But Nobelist Emilio Segre' had expressed the same concern in an article published in "Endeavor" magazine in 1972, which I believe no longer exist.
Tullio

Rod
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RE: RE: The problem I am

Message 96129 in response to message 96128

Quote:
Quote:

The problem I am beginning to have with these machines is that we are spending 20 billon dollars on them not to explore but to validate a model. When these machines do not deliver, we tweak the math and spend more gobs of money in attempting to validate that. I do not know in depth the subject. I find the standard model very complex. And if theories explaining nature are complex, they are usually incorrect.

Two Italian elementary particle physicists, Angelo Baracca and Silvio Bergia wrote a book in the Seventies expressing the same concern. Its title, "La spirale delle alte energie" referred to the particle's trajectory in cyclotron and the spiraling of both costs and energy in particle accelerators. I don't think it was ever translated in English also because it is a mixture of theoretical physics and marxist philosophy. But Nobelist Emilio Segre' had expressed the same concern in an article published in "Endeavor" magazine in 1972, which I believe no longer exist.
Tullio

Well.. You need complex expensive tools to verify complex theories.. If the world has the disposble cash for this physics experiment.
I get the feeling we are not going get a 20 billion dollar return in science on the investment

There are some who can live without wild things and some who cannot. - Aldo Leopold

tullio
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About 10000 people are

About 10000 people are involved in LHC experiments and get paid for it. Perhaps elementary particle physics should be called alimentary particle physics. Sometimes I envy them for doing what they like and also getting paid.
Tullio

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