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[OT] PBS - NOVA. Neutrinos (Tue EST 20:00 [8 PM])
FYI. Cheers, Alan. Next on NOVA: "The Ghost Particle" http://www.pbs.org/nova/neutrino Broadcast: February 21, 2006 at 8 p.m. ET/PT (NOVA airs Tuesdays on PBS at 8 p.m. Check your local listings as dates and times may vary.) In this program, NOVA probes the secret ingredient of the cosmos: swarms of invisible particles that fill every cubic inch of space and just may explain how the universe was created. Trillions of ghostly neutrinos move through our bodies every second without us noticing a thing. Yet without them the sun wouldn't shine and the elements that make up our world wouldn't exist. This program explores the 70-year struggle so far to understand the most elusive of all elementary particles, the neutrino. NOVA accompanies scientists into the laboratory, revealing astonishing footage of bizarre experiments. Here's what you'll find on the companion Web site: ARTICLE & INTERVIEW The Producer's Story Filmmaker David Sington shares seven rules for making good TV out of complex topics. Dancing With Neutrinos In this intimate interview, the late astrophysicist John Bahcall recalls what it felt like to be vindicated after four decades. SLIDE SHOW & TIME LINE Awesome Detectors In this slide show, see how bigger is definitely better when it comes to apprehending elusive neutrinos. Case of the Missing Particles Follow the history of daring proposals and meticulous experiments that led to a surprising breakthrough in physics. PODCASTS Subscribe to the NOVA podcast to download three audio pieces about neutrino science, and hear other stories on a wide range of fascinating science topics. Also, Links & Books, the Teacher's Guide, the program transcript, and more. http://www.pbs.org/nova/neutrino |
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[OT] PBS - NOVA. Neutrinos (Tue EST 20:00 [8 PM])
Thanks,
I liked the 1987 supernova one many years ago. I guess this is a spin off. "Alan Browne" wrote in message ... FYI. Cheers, Alan. Next on NOVA: "The Ghost Particle" http://www.pbs.org/nova/neutrino Broadcast: February 21, 2006 at 8 p.m. ET/PT (NOVA airs Tuesdays on PBS at 8 p.m. Check your local listings as dates and times may vary.) In this program, NOVA probes the secret ingredient of the cosmos: swarms of invisible particles that fill every cubic inch of space and just may explain how the universe was created. Trillions of ghostly neutrinos move through our bodies every second without us noticing a thing. Yet without them the sun wouldn't shine and the elements that make up our world wouldn't exist. This program explores the 70-year struggle so far to understand the most elusive of all elementary particles, the neutrino. NOVA accompanies scientists into the laboratory, revealing astonishing footage of bizarre experiments. Here's what you'll find on the companion Web site: ARTICLE & INTERVIEW The Producer's Story Filmmaker David Sington shares seven rules for making good TV out of complex topics. Dancing With Neutrinos In this intimate interview, the late astrophysicist John Bahcall recalls what it felt like to be vindicated after four decades. SLIDE SHOW & TIME LINE Awesome Detectors In this slide show, see how bigger is definitely better when it comes to apprehending elusive neutrinos. Case of the Missing Particles Follow the history of daring proposals and meticulous experiments that led to a surprising breakthrough in physics. PODCASTS Subscribe to the NOVA podcast to download three audio pieces about neutrino science, and hear other stories on a wide range of fascinating science topics. Also, Links & Books, the Teacher's Guide, the program transcript, and more. http://www.pbs.org/nova/neutrino |
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[OT] PBS - NOVA. Neutrinos (Tue EST 20:00 [8 PM])
Alan Browne wrote: FYI. Cheers, Alan. Next on NOVA: "The Ghost Particle" http://www.pbs.org/nova/neutrino Broadcast: February 21, 2006 at 8 p.m. ET/PT (NOVA airs Tuesdays on PBS at 8 p.m. Check your local listings as dates and times may vary.) In this program, NOVA probes the secret ingredient of the cosmos: swarms of invisible particles that fill every cubic inch of space and just may explain how the universe was created. Is this the unexplained 'dark matter' that makes up 90% of the mass of the universe? From what I have read on the subject - not that much, mind - the known or visible mass is insufficient to prevent the universe from ceasing to expand, and then collapsing on itself, and the only way the math works to fit the observed behavior is to postulate the presence of hitherto undetected mass. Mindbending stuff. Colin D. |
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[OT] PBS - NOVA. Neutrinos (Tue EST 20:00 [8 PM])
Colin D wrote:
Is this the unexplained 'dark matter' that makes up 90% of the mass of the universe? From what I have read on the subject - not that much, mind - the known or visible mass is insufficient to prevent the universe from ceasing to expand, and then collapsing on itself, and the only way the math works to fit the observed behavior is to postulate the presence of hitherto undetected mass. Dark matter is partly (very small part) neutrinos. No idea of the amount but if neutrinos make up less than 1% of DM I would not be surprised. DM is about 23% of the mass of the universe, 73% is "dark energy" (which is the same as mass for the purpose of the expansion problem). The rest is what stars and planets and such are made of. If gravitons (messenger particles for gravity) do in fact exist, and they're flying around at c between every bit of mass in the universe and every other little bit of mass in the universe, then these massless photons could account for a hell of a lot of the "dark energy". That's my take, so it's probably dead wrong. Cheers, Alan -- -- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm -- [SI] gallery & rulz: http://www.pbase.com/shootin -- e-meil: Remove FreeLunch. |
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[OT] PBS - NOVA. Neutrinos (Tue EST 20:00 [8 PM])
"Alan Browne" wrote in message ... Colin D wrote: Is this the unexplained 'dark matter' that makes up 90% of the mass of the universe? From what I have read on the subject - not that much, mind - the known or visible mass is insufficient to prevent the universe from ceasing to expand, and then collapsing on itself, and the only way the math works to fit the observed behavior is to postulate the presence of hitherto undetected mass. Dark matter is partly (very small part) neutrinos. No idea of the amount but if neutrinos make up less than 1% of DM I would not be surprised. DM is about 23% of the mass of the universe, 73% is "dark energy" (which is the same as mass for the purpose of the expansion problem). The rest is what stars and planets and such are made of. If gravitons (messenger particles for gravity) do in fact exist, and they're flying around at c between every bit of mass in the universe and every other little bit of mass in the universe, then these massless photons could account for a hell of a lot of the "dark energy". That's my take, so it's probably dead wrong. In general, I agree with that. I have an almost religious belief in the conservation of energy, so I believe that the universe will have to collapse eventually, because the matter that was created by the initial big bang, must necessarily have enough gravitational pull to bring everything back to the same point again. If there isn't enough matter to do that, then it must be because there's stuff out there that we haven't discovered yet....... |
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[OT] PBS - NOVA. Neutrinos (Tue EST 20:00 [8 PM])
William Graham wrote:
In general, I agree with that. I have an almost religious belief in the conservation of energy, so I believe that the universe will have to collapse eventually, because the matter that was created by the initial big bang, must necessarily have enough gravitational pull to bring everything back to the same point again. If there isn't enough matter to do that, then it must be because there's stuff out there that we haven't discovered yet....... Thoughoughly enjoyed the show... and you'll be glad to know that "conservation of energy" was one of the first things mentioned and provided an early clue that something seemed wrong regarding particle decay .. the first hint that neutrinos existed. Cheers, Alan -- -- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm -- [SI] gallery & rulz: http://www.pbase.com/shootin -- e-meil: Remove FreeLunch. |
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