"Soot deposition" refers to the process of black, powdery particles settling and accumulating on surfaces. It occurs when there is incomplete combustion of fuels such as coal, wood, or oil, and the resulting tiny particles are released into the air. These particles can end up sticking to various objects, leaving behind a layer of black residue called
soot deposition. It is commonly seen on chimneys, exhaust pipes, and walls near fireplaces or other sources of combustion.
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