The Mystery of Cold Air Travel: Light vs. Heat

AI Thread Summary
Cold air travels as a mass, similar to how warm air moves, through convection. While heat naturally flows from warmer to cooler areas, the concept of "cold" is often misunderstood as it represents the absence of heat rather than a substance moving. The discussion highlights the confusion surrounding the nature of cold air, comparing it to darkness, which is the absence of light. The interaction between cold and warm reservoirs illustrates that temperature changes can create the illusion of cold moving in one direction. Ultimately, understanding cold air requires recognizing its relationship with heat rather than viewing it as an entity traveling independently.
Raza
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How does cold air travel?
Isn't it like me flashing darkness at your face?
Because cold is the absence of heat as darkness is absence of light.
It's like nothing traveling.
I know it's confusing.:confused:
 
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Cold air is air...it travels like air. :confused::confused:

Heat moves from warm areas to cold areas, though that isn't necessarily how air works because air moves as a mass and transfers heat through convection. If you have a cold reservoir and a warm reservoir (say, big blocks of steel) and connect them with a conducting material, the heat will travel from warm to cold. But the temperature profiles will be symmetrical, so it almost looks as though you can consider the heat to be flowing in one direction or the "cold" to be flowing in the other.
 
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Raza said:
How does cold air travel?
Isn't it like me flashing darkness at your face?
Because cold is the absence of heat as darkness is absence of light.
It's like nothing traveling.
I know it's confusing.:confused:

This could be turned into a nice limerick:

How does cold air go about traveling?
Isn't it like darkness unraveling?
Cold is the absence
of heat in this parlance
of nonsense, I know it's confusing.
 
I think it's easist first to watch a short vidio clip I find these videos very relaxing to watch .. I got to thinking is this being done in the most efficient way? The sand has to be suspended in the water to move it to the outlet ... The faster the water , the more turbulance and the sand stays suspended, so it seems to me the rule of thumb is the hose be aimed towards the outlet at all times .. Many times the workers hit the sand directly which will greatly reduce the water...
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