Final answer:
An electrostatic precipitator is a device used to remove particles from smokestack gases. It is used industrially to remove particles from stack gas emissions and can also be used in homes to remove polluting particles, irritants, and allergens.
Step-by-step explanation:
An electrostatic precipitator is a device used to remove particles from smokestack gases. Large electrostatic precipitators are used industrially to remove over 99% of the particles from stack gas emissions associated with the burning of coal and oil. Home precipitators, often in conjunction with the home heating and air conditioning system, are very effective in removing polluting particles, irritants, and allergens.