Relative humidity - a dim memory
Didn't we used to measure relative humidity by some method involving wrapping
a little wet cloth round the end of a thermometer and swinging it around for a
bit? Then I think you had to compare the wet and dry temperatures and do a bit
of looking up in some table or other.
Can't remember the details - but certainly no expensive equipment was involved
- a little rag and a rubber band on the thermometer - and I think the results
were accepted as accurate.
Peter Marshall
On Fixing Shadows, Dragonfire and elsewhere:
http://faraday.clas.virginia.edu/~ds8s/
Family Pictures & Gay Pride: http://www.dragonfire.net/~gallery/
and: http://www.speltlib.demon.co.uk/
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