How does smoke and germs enter the air
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when we burn materials in open environment then their smoke enters into the air and
when anyone sneezes or coughs tiny water droplets scatters in the air which contains germs
when anyone sneezes or coughs tiny water droplets scatters in the air which contains germs
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GERMS
Droplets in the air spread germs. When a person coughs or sneezes, small droplets of water are released into the air. If this person has a throat or lung disease, the germs will also be in these droplets. If these droplets then come into contact with or are breathed in by other people, they too can get the disease.
SMOKE
When something burns, the degree to which the fuel combusts determines how much smoke there will be. For instance, the very hot blue flame of a typical gas stove nearly completely combusts the fuel, producing molecules of water vapor and carbon dioxide gas--both of which are particles too small to see. When a match burns, by contrast, the complex chemicals that make up the wood of the match do not completely combust. While burning and hot (but probably not quite as hot as your stove's flame), most of the material is vaporized or rendered into such tiny particles that you cannot see them. When the flame lowers or even goes out, the temperature falls and the level of combustion lowers, producing more particles than gas...and you see smoke. When it is warm, the tiny particles rise in the air and fill the room from ceiling to floor. As they cool, the particles will settle on surfaces in the room. Some particles will be attracted to dust particles already in the air, join with them, and form larger "nucleated" particles that will more quickly settle as dust on horizontal surfaces and especially on fabric.
Droplets in the air spread germs. When a person coughs or sneezes, small droplets of water are released into the air. If this person has a throat or lung disease, the germs will also be in these droplets. If these droplets then come into contact with or are breathed in by other people, they too can get the disease.
SMOKE
When something burns, the degree to which the fuel combusts determines how much smoke there will be. For instance, the very hot blue flame of a typical gas stove nearly completely combusts the fuel, producing molecules of water vapor and carbon dioxide gas--both of which are particles too small to see. When a match burns, by contrast, the complex chemicals that make up the wood of the match do not completely combust. While burning and hot (but probably not quite as hot as your stove's flame), most of the material is vaporized or rendered into such tiny particles that you cannot see them. When the flame lowers or even goes out, the temperature falls and the level of combustion lowers, producing more particles than gas...and you see smoke. When it is warm, the tiny particles rise in the air and fill the room from ceiling to floor. As they cool, the particles will settle on surfaces in the room. Some particles will be attracted to dust particles already in the air, join with them, and form larger "nucleated" particles that will more quickly settle as dust on horizontal surfaces and especially on fabric.
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