Air pollution
Dispersion of air pollutants into the atmosphere
👉 The rate of temperature with altitude is known as lapse rate
👉 Adiabatic Lapse rate :- Any warm air parcel if it rise in temperature for every 1 km rise, change of temperature is -9.8℃
♦️ Ringleman charts :- It measure density of smoke
♦️ Isokinetic sampling :- Collection of smoke using the probe across the c/s of stack
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