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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!think.com!ames!pacbell.com!tandem!zorch!fusion
- From: Dieter Britz <BRITZ@kemi.aau.dk>
- Subject: Subject: Re: Something I didn't know
- Message-ID: <A957D0292FDF206C4E@vms2.uni-c.dk>
- Sender: scott@zorch.SF-Bay.ORG (Scott Hazen Mueller)
- Reply-To: Dieter Britz <BRITZ@kemi.aau.dk>
- Organization: Sci.physics.fusion/Mail Gateway
- Date: Mon, 21 Dec 1992 19:21:29 GMT
- Lines: 47
-
-
- Originally-From: webb+@CS.CMU.EDU (Jon Webb)
-
- >But Dieter, you must admit that there is no tenable theory to explain
- >excess heat in *any* cold fusion experiments. Mills has a theory that
- >must be wrong, but he's no worse off than Pons and Fleischmann who
- >seem to be claiming D+D->4He, or any of the really wild theories
- >(twist of ribbon, mini-black holes, multi-particle interactions). All
- >we have to go on is data, and Mills's data is probably about as good
- >as any of the second-tier experiments. So I don't see a good reason
- >for doing, say, heavy water+palladium experiments instead of ordinary
- >water+nickel -- if you're going to do an experiment at all, that is.
- >At least if you do a Mills-style experiment the materials are cheaper
- >and the claimed effect is stronger.
-
- The cheapness and ease is about the only attractive feature. But the scenario
- is worse than you describe. It's true that if this experiment unambiguously,
- easily and reproducibly produced oodles of excess heat, one would have to
- accept that it's good evidence. But it is not like that. Have you forgotten
- that when it is conducted in a closed system, the effect goes away? In other
- words, you get the effect only when doing a sloppy experiment, when you do
- it better, no go. There is a totally meaningless explanation for this from
- M&F. This kind of thing will not convince anybody except those who want to
- believe.
-
- F&P did at some stage start with a sort of "theory" or at least a hunch, that
- they just might be able to generate sufficient pressure, or whatever, within
- PdD to get fusion. To give them credit, they didn't set up an elaborate new
- detailed theory that means rewriting QM and is full of holes; their theory
- amounted to converting an overpotential, by use of the Nernst equation, to an
- enormous "pressure". While I have my reservations about this, it is at least
- controversial, i.e. not wholly nutty. If Bockris is willing to entertain it,
- maybe I should, too. F&P knew they were not theoretical physicists, and left
- it at their hunch, and went for the experiment.
-
- A scientist learns to be selective. Not all papers are equally significant.
- Oyama et al thought they found excess heat but it turns out they took
- temperature peaks only, in a convecting solution. I can easily dismiss the
- Russian work where two solutions were mixed and neutrons measured - except
- as an instance of some of the bizarre outgrowths of this field; likewise for
- black holes (or dust mites) and star formation. Weeding out all the rubbish
- does leave a fair body of quality work, and even a tiny residue of quality
- positives. But not "hundreds".
- ----------------------------------------------------------------------------
- Dieter Britz alias britz@kemi.aau.dk
- Kemisk Institut, Aarhus Universitet, 8000 Aarhus C, Denmark.
- ----------------------------------------------------------------------------
-