HT>>> 100*10^-(23.2801+(-5287.32/("Dry Bulb"+459.4)))*("Dry
 HT>>> Bulb"+459.4)^4.9283
 HT>>> *(10*(23.2801+(-5287.32/("Wet Bulb"+459.4)))
 ml>> ====-----^

 ml>> that * should be a ^ ;) you were right, it was a typo
 ml>> ;)

 HT> You found it!  Thanks.

welcome ;)

 HT> What I'm really doing is using software that generates cell
 HT> entries in spreadsheet-like columns.  It fills the cells in
 HT> those columns with readings it gets from sensors.  The user
 HT> can create new columns and, just like in a spreadsheet, put
 HT> formulas in the cells of those columns.  So, I've got two
 HT> electronic temperature sensors connected, one in a wet sock,
 HT> measuring the wet and dry bulb temperatures every 12 minutes

how can one set up their own "shadetree mechanic" type of
instruments like the wet bulb thermometer? is it just a matter of having
two thermometers the same and mounting out with a cloth that is soaked with
water?

[trim]

 HT> If you're interested they have a great web site

i've been by several weather related sites looking at their machines...
we've been wanting to have something out here for a long time but the cost
has always been prohibitive...

)\/(ark