Convection is the process of heat
or mass transfer through air or fluid. It is caused by the movement of
molecules from cool to warmer regions.
The word arises from the Latin convehere
which means to bring together. I mention ‘convection’ in this blog as
inaccuracies in pronunciation often cause it to be mistaken for ‘convention’.
The easiest way to understand the
process is via meteorological changes to air and temperature where hot air
rises, then cools, forms rain clouds and results in cooler air.
We generally hear this word in relation to
convection ovens where the process heats and cooks food in the contained
environment of the oven.
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