Maybe we need dust precipitator equipment practical use.
Have you tried that trick where you rub a balloon repeatedly on your sweater until it sticks by the sheer force of static electricity? As you rub the balloon, electrons break free from the molecules of rubber that are inside it and gather on your sweater. The balloon (losing electrons) becomes positively charged while your sweater (gaining electrons) becomes negatively charged. Because opposite charges attract, the balloon sticks to your sweater.
What does all this have to do with smoke? Smoke might look like a gas but it's actually an aerosol. Most aerosols (such as air fresheners and polishes that come out of aerosol cans) are made of liquid droplets dispersed through gases, but smoke is a bit different: it's a solid dispersed in a gas. Smoke consists of microscopically tiny particles of soot (unburned carbon) dispersed through hot, rising air. Imagine if you could "rub" all the tiny smoke particles as they entered the bottom of a smokestack to give them a tiny electrical charge... and you wrapped something like a sweater round the inside of the smokestack at the top. In theory, the electrically charged smoke particles would cling to the sweater, removing the dirt from the smoke and leaving clean hot air to emerge by itself. Strange as it sounds, that's the basic idea behind dust precipitator equipment!
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