In morning, if any window is closed for a night, it can be seen that there are water drops in the window glass. But their intensity is larger at bottom and lesser towards up. Another thing is that there is not a single drop or water in the edge of glass, i.e. up-to around 1 inch from the wood or support of glass there is no drops of water. Have you ever noticed? What is the simplest logic?
QUOTE (rabindraadhi+Dec 11 2005, 08:23 AM)
their intensity is larger at bottom and lesser towards up.
There's a temperature and moisture gradient, most of dew is created near the ground cooled by the radiation to the space overnight, after all.
The building has a greater temperature then air in general, so that the heat spreads across the glass table and the condensation occurs at the certain distance from the source of heat.
There's a temperature and moisture gradient, most of dew is created near the ground cooled by the radiation to the space overnight, after all.
The building has a greater temperature then air in general, so that the heat spreads across the glass table and the condensation occurs at the certain distance from the source of heat.
The water is on the glass, not in it.
The distribution pattern is a result of the thermal conductivity of the glass, the pattern indicative of the thermal gradient. Heats of condensation and evaporation will further modify that gradient, in relation to the ambient fluctuations and normal heat flow through the glass.
The distribution pattern is a result of the thermal conductivity of the glass, the pattern indicative of the thermal gradient. Heats of condensation and evaporation will further modify that gradient, in relation to the ambient fluctuations and normal heat flow through the glass.
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