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- Path: sparky!uunet!olivea!decwrl!mips!pacbell.com!tandem!zorch!fusion
- From: 72240.1256@compuserve.com (Jed Rothwell)
- Newsgroups: sci.physics.fusion
- Subject: Newton's Constant Somewhere
- Message-ID: <920721182738_72240.1256_EHL54-2@CompuServe.COM>
- Date: 21 Jul 92 19:56:11 GMT
- Sender: scott@zorch.SF-Bay.ORG (Scott Hazen Mueller)
- Reply-To: Jed Rothwell <72240.1256@compuserve.com>
- Organization: Sci.physics.fusion/Mail Gateway
- Lines: 40
-
- To: >INTERNET:fusion@zorch.SF-Bay.ORG
-
- Tom's D. comments:
-
- "Briefly, there is a big difference between a calibration resistor in an open
- calorimeter, and a cell which bubbles and causes the electrolyte level to
- change. Don't know how one can be used to calibrate the other with much
- accuracy."
-
- Well, it is not a big difference. I have lots of data to show it is a
- moderate, predictable difference, but the point is well taken. Fleischmann and
- Takahashi both suggest that it is better to calibrate with electrolysis than
- with a resister. I suggest it is best to calibrate with both. It does not add
- to accuracy, but it gives you a better feel for the calorimeter.
-
- Regarading water levels: it is essential that you get a handle on this.
- Calibrate with the highest possible water level, the lowest level, and in the
- middle.
-
- "Jed Rothwell, if you would write shorter messages I would read them more
- carefully." Hey, I got a lot to say! I'm talkin' politics & Japan here, both
- wordy subjects. Seriously, though, there have been so many misconceptions
- about this business, and so many odd, incorrect ideas about basic calorimetry,
- that I feel it is time to lay it out in depth. Dieter objects to my treating
- the subject as if I was talking to children. You, and he, are both welcome to
- chalk that up to my own ignorance of the field, and my need to explain every
- point in enough detail to allow anyone to see if I have gone off the track.
-
- I notice, however, that in spite of his objections, Dieter has not attempted
- to explain how a simple calorimeter could be off by a factor of 30. You gave
- it a good solid try, but your analysis is wrong. Keep Trying! It is a good
- exercise for everybody. I don't know why you are wrong, but my data shows you
- are completely off. (Having real data is a luxury; its great for people like
- me who do not understand heat transfer theory. I don't *have* to understand
- it, I can see right here that mixing does not change between phases, and the
- TCal remains constant.)
-
- Mark Hugo, by the way, tells me you forget Newton's constant somewhere.
-
- - Jed
-