DIYbanter - View Single Post

In article ,
says...
"Ether Jones" wrote:

Robert Gammon wrote:
the air has WEIGHT when
stepping outside on a sunshiny day with temps in the 90s and RH nearly 90.

Humid air is LIGHTER than dry air at the same temperature and pressure,
NOT heavier.

Kinda has to be if you want clouds, isn't it?
If you watch how clouds boil up, it is obvious.

Moist air, however, feels "thicker," leading to terms like "pea-soup
fog." As a totally wild guess, I wonder if the effect is a subjective
one, partly from the humdity displacing part of the air and thus
reducing the oxygen content, and partly from the water being more
reactive than nitrogen, and therefore wanting to bond together in
larger structures, which in turn create more drag on objects moving
through the vapor?

Moist air is "lighter" than dry air (air pressure tends to be
lower when it storms and higher in fair weather), however the body
is heavier since lighter air is less buoyant. ...kinda like liquid
water is denser than air but people float. ;-)

--
Keith