Why is the air so fresh after the rain?

When it thunders, the positive and negative potentials are separated.

The lighter positive potential floats upward, and the heavier negative potential becomes raindrops and rain.

The numb of negative ions in that generate air increases.

So we feel fresh and comfortable, and this is the effect of negative ions on the human body.

Page (abbreviation of page) s loves the sky and air after rain! ^^

OZONE is ozone in English, which means "fresh air" or "exciting power". Because ozone has a special fresh smell at low concentration, it makes people feel refreshed after inhalation, but it has a special smell at slightly higher concentration. The ozone content in the atmosphere near the ground is very small, only 0.00 1ppm, and the ozone concentration at the seaside is 0.0 1-0.08ppm, because oxygen (O2) in the air is converted into ozone (O3) by lightning, which is the fundamental reason why the ocean air is particularly fresh after rain.

/b/3045 185.html

1, lightning turns oxygen into ozone, and a small amount of ozone has a proper exciting effect on human nervous system, which is of course a physiological reflection; After the rain, some oxygen in the air turned into ozone. Ozone is also oxygen, but it has one more oxygen atom than ordinary oxygen. An oxygen molecule contains two oxygen atoms, while ozone contains three oxygen atoms. Thin ozone doesn't stink at all. It has oxidation ability, and can drift and sterilize. There is a little ozone in the air after rain, which can purify the air and make it fresh.

2. A heavy rain drenched the air, and the rain washed away the air, and the suspended dust was washed away, which made people feel refreshed; Rain takes away many soluble substances (such as sulfur dioxide) and some inhalable particles in the air. In addition, thunder will produce new ecological oxygen, and a small amount of ozone will make people feel the air is fresh!

3, the temperature drops after the rain, the human body is very adapted to such an environment, so there will be psychological hints that the air is refreshing after the rain.