RE: [Utah-astronomy] Wolf Creek and Meeting last night
Don, you mentioned vacuum energy in one of your replies. This brings to mind an excellent book from a few years back called "The Hole in the Universe: How Scientists Peered Over the Edge of Emptiness and Found Everything", by K.C. Cole. It deals with the science of nothing--why a vacuum isn't and so on. Depending on your nature, it will either put you right to sleep or keep you from sleeping at all. -----Original Message----- From: Chuck Hards <chuckhards@yahoo.com> Sent: Aug 24, 2005 12:34 PM To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Subject: RE: [Utah-astronomy] Wolf Creek and Meeting last night Thanks, Don. Although perhaps gravitational lensing techniques would have detected them also, I wonder about black holes in mass-poor regions- those with no accretion disks, and thus no emmisions (other than gravity waves). Or perhaps "small" black holes, those unrelated to stellar evolution? Surely we haven't inventoried all possible large forms of baryonic matter. --- "Don J. Colton" <djcolton@piol.com> wrote:
He didn't talk about elements with high atomic numbers.
He discussed brown dwarfs etc. as a possibility but said numerous surveys using gravitation lensing etc. had failed to convince anyone this was a significant component. He didn't talk about the other possibilities but we ran out of time for questions.
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Michael, I think I remember something about this- nature truly does abhor a vacuum- so vacuums are unstable, and matter tends to 'pop' into existence on a quantum scale due to the vacuum energy- or something like that? One day my daughter will be grown-up and I will be able to read and study again! Hope I live long enough to put a dent in this ever-growing "must read" list! --- Michael Carnes <michaelcarnes@earthlink.net> wrote:
Don, you mentioned vacuum energy in one of your replies. This brings to mind an excellent book from a few years back called "The Hole in the Universe: How Scientists Peered Over the Edge of Emptiness and Found Everything", by K.C. Cole. It deals with the science of nothing--why a vacuum isn't and so on. Depending on your nature, it will either put you right to sleep or keep you from sleeping at all.
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--- Chuck Hards <chuckhards@yahoo.com> wrote:
Michael, I think I remember something about this- nature truly does abhor a vacuum- so vacuums are unstable, and matter tends to 'pop' into existence on a quantum scale due to the vacuum energy- or something like that?
Each generation has its own major challenge in physics - the undiscovered country of the unexplained. In the 18th century their challenge was electricity - that was explained in the 19th century with electromagnetic theory. In the 19th century, their challenge was radioactivity - that was explained by quantum mechanics in the 20th century. In the 20th century, it was the discovery of zero-vacum energy and quantum foam. How is it that the energy and matter than we are made out of apparently is continuously popping in and out of the known universe? Where does it go and why does it "come back"? Hope I live long enough for science to find the answer. I've grown doubtful since Congress defunded the super-conducting super collider. But last night's presentation, that touched in part on the new CERN accelerator renews some hope. - Canopus56 __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail
I wrote:
Each generation has its own major challenge in physics - the undiscovered country of the unexplained.
In another message, Don Colton wrote:
I asked Dr. Gondolo about entanglement actually contributing mass to the universe. . . . Experiments have already been conducted "teleporting" particles in this manner.
O, yah. I forgot to add positive lab tests of the Einstein-Podolsky-Rosen thought experiment to the list of those great physic's imponderables that challenge the next generation. Explain "spooky action at a distance." That's a pretty obvious one. - C http://en.wikipedia.org/wiki/EPR_paradox http://scienceworld.wolfram.com/physics/Einstein-Podolsky-RosenParadox.html ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs
participants (3)
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Canopus56 -
Chuck Hards -
Michael Carnes