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- From: ames!FNALD.FNAL.GOV!DROEGE
- Subject: Calorimetry
- Message-ID: <920722141638.242008a0@FNALD.FNAL.GOV>
- Sender: scott@zorch.SF-Bay.ORG (Scott Hazen Mueller)
- Reply-To: ames!FNALD.FNAL.GOV!DROEGE
- Organization: Sci.physics.fusion/Mail Gateway
- Date: Wed, 22 Jul 1992 22:07:52 GMT
- Lines: 23
-
- Jed Rothwell writes:
- "How could convection suddenly have this effect 2 or 3 weeks into the
- experiment, and why does it build up over time? The effects of convection
- currents must surely be the same throughout the experiment."
-
- We live in a fluid called air, Jed. Sometimes we have Tornadoes, but not all
- the time. They are very capricious. That is because temperature gradients in
- a fluid can do very complicated things. Lakes are known to develop inversion
- layers and "turn over" at unpredictable times. These effects are also
- observed in deep ocean behavior. The largest computers are yet to be able to
- predict these effects. I have observed something similar to lake "turn over"
- in my cells. So I do not trust the thermometer in the cell to provide
- anything more than an indication that the temperature at one point in the cell
- is changing.
-
- The only calorimetry that I will begin to trust eliminates any dependence on
- temperature gradients in the calorimeter. McKubre uses one scheme to attempt
- this, I use another. There are others that do good calorimetry. Takahashi is
- not yet on my list.
-
- Tom Droege
-
-
-