10-18-2010, 02:44 PM | #61 | |
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10-18-2010, 02:48 PM | #62 |
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No, Hawking radiation is something different to what Sparrow's talking about, although it does also involve pairs of particles (or rather, a particle and its antiparticle).
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10-18-2010, 02:58 PM | #63 |
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I think I'm talking about quantum entanglement - but I'm not pretending to have more than the vaguest notion of what it's all about.
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10-18-2010, 03:33 PM | #64 | |
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I rather suspect that my friend's answer is going to be "I don't know". As I'm sure you know, there is a fundamental flaw in modern physics in that general relativity (which is purely a field theory) and quantum mechanics just don't play together nicely, and our current understanding of black holes is purely in terms of GR. People have been searching, thus far largely unsuccessfully, for a way to unify GR and QM for the last 60 or so years - a so-called "Grand Unified Theory" (GUT), or "Theory of Everything". |
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10-18-2010, 03:48 PM | #65 |
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Here is an experiment that was published a few days ago that relates:
http://www.scientificamerican.com/ar...king-radiation |
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10-18-2010, 04:19 PM | #66 |
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10-18-2010, 04:22 PM | #67 | |
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I thought it resulted from a particle split, but I'm apparently wrong. |
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10-18-2010, 05:50 PM | #68 | |
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Mind you, I'm not arguing against climate change. Cheers, PKFFW |
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10-18-2010, 06:00 PM | #69 | |
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1: A poll of a bunch of people who read Scientific American and Nature is of course going to show a high level of trust in what scientists say about certain issues. Just as a poll of people who read Rock magazine in Australia will show a high level of trust in what Dan Osman has to say. Doesn't really say much. 2: Do the readers even have any interest and any knowledge in all of the issues asked about? I'm making an assumption here but it seems to me that many of those issues would have a wide ranging and conflicting set of views espoused by scientists in those fields. So how could anyone trust what "scientists" say on the issue without first knowing if there is a general consensus and then knowing what that consensus states? Cheers, PKFFW |
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10-18-2010, 06:12 PM | #70 |
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I've often wondered what happens to all the data that doesn't get reported. I recently worked with a cognitive scientist working on elucidating the specific function of a bit of the brain in language processing. Sometimes his experiments didn't support his theoretical position. Of course, these experiments didn't get written up - his explanation was that the data was screwed or the experimental design was wrong. I'm sure he is not unique.
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10-19-2010, 03:04 AM | #71 | |
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Last edited by HarryT; 10-19-2010 at 03:10 AM. |
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10-19-2010, 03:09 AM | #72 | |
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10-19-2010, 03:24 AM | #73 |
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On the same topic, there's also the "Rutherford's gold foil" experiment ( http://en.wikipedia.org/wiki/Geiger%...den_experiment ) which completely shocked them.
"""It was quite the most incredible event that has ever happened to me in my life. It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you""" |
10-19-2010, 03:28 AM | #74 | |
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Here, existing knowledge is overturned, and further knowledge is uncovered more by accident than design. |
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10-19-2010, 03:33 AM | #75 | |
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I imagine it must be more difficult in fields like neuro-science. Experiments are probably less reproducable than those in fields like physics. |
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