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Ed Pawlowski Ed Pawlowski is offline
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Default boiling water with lid off?

On Sat, 03 Mar 2012 19:27:48 +1100, Krypsis >
wrote:



>
>Let's try this again...
>
>What is condensate if not steam that has been condensed? If you have
>condensate on the walls of your bathroom after having a shower, how did
>the condensate get there? Was it a "miracle"?



It sure was not from steam. To make steam, water has to be heated to
a minimum of 212F at sea level. Steam is invisible, a vapor. When we
"see" steam, it is really vapor mixed with the condensate.
>
>Now, let's look at fog. Fog is technically water vapour which has
>condensed. Been down to the river lately. Go down there on a cool
>morning sometime just as the sun is rising. You will see "fog" rising
>from the water. This fog is just condensate. It was given off from the
>surface of the water as steam or water vapour if you prefer.


Half right. No steam in the river. Have you ever seen a river boil?


Water vapor is formed by evaporation or boiling. Water vapor though,
is not steam. Water vapor can condense on the walls when you shower,
it can condense over a river, make clouds in the sky.

Sublimation can also form water vapor. Much of the snow in Alaska is
sublimated rather than melted.