> Reply Can this be right? Air laden with water is lighter than air?

Yes, H20 is lighter than O2, although I am sure that the answer is not quite
that simple, since the result of combining air and water vapour is likely
some kind of solution.  Besides, the air laden with water vapour is
generally warmer than surrounding air and would therefore rise all other
thngs being equal.  From an empirical POV, we see that, after a rain, the
water dries up and forms into clouds, normally well above the earth.

> Every time I have attempted the matchsticks under the crown board
> trick they have filled the gap with propolis before Christmas perhaps
> suggesting that the bees "prefer" no draughts?

We calculated the equivalent area of such a crack under the lid one time
here on BEE-L, when this same idea was mentioned and got 1/16" x 18-1/2" x
14-1/2" = 16.8 square inches.  That is equivalent to a hole four inches by
four inches!  Moreover, the draught is distributed all around the hive.

Maybe a good idea for warm areas, but not wise in cold regioins -- IMO.

allen
http://www.honeybeeworld.com/diary/

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