安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Ozone - Wikipedia
Ozone is formed from dioxygen by the action of ultraviolet (UV) light and electrical discharges within the Earth's atmosphere It is present in very low concentrations throughout the atmosphere, with its highest concentration high in the ozone layer of the stratosphere, which absorbs most of the Sun 's ultraviolet (UV) radiation
- What is Ozone? - US EPA
Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2) The "ozone layer," approximately 6 through 30 miles above the Earth's surface, reduces the amount of harmful UV radiation reaching the Earth's surface
- Ozone - American Lung Association
Ozone (also called smog) is one of the most dangerous and widespread pollutants in the U S It may be hard to imagine that pollution could be invisible, but ozone begins that way As ozone concentrates and mixes with other pollutants, we often call it by its older, more common name—smog
- Ozone layer | Description, Importance, Facts | Britannica
ozone layer, region of the upper atmosphere, between roughly 15 and 35 km (9 and 22 miles) above Earth’s surface, containing relatively high concentrations of ozone molecules (O 3)
- What is Ozone (O₃)? - Clean Air Initiative
Quick Answer: Ground-level ozone (O₃) is a colorless gas that forms when nitrogen oxides (NOₓ) and volatile organic compounds (VOCs) react in sunlight Unlike protective ozone in the upper atmosphere, ground-level ozone is a harmful air pollutant that can damage your lungs and respiratory system
- Ozone and You | Ozone Secretariat
What is the ozone layer? The ozone layer is a region of high ozone concentration in the stratosphere, 15 to 35 kilometres above Earth's surface The ozone layer acts as an invisible shield and protects us from harmful ultraviolet (UV) radiation from the sun
- AirNow. gov
AirNow is your one-stop source for air quality data Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views
- Ozone - New World Encyclopedia
Ozone (molecular formula O 3) is a minor constituent of the Earth's atmosphere, but its effects are highly significant It is chemically very reactive and is involved in reactions that drive many of the chemical changes that occur in the atmosphere by day and by night
|
|
|