1. The principle greenhouse
When the sun through the glass, the rays with a wavelength λ greater than 0,7μm be prevented through. The rays have shorter wavelengths will pass the glass 0,7μm. When passing through the glass, our interaction will happen to the physical photons emitted as secondary heat rays have longer wavelengths infrared (greater than 0,7μm), so I can not go out and the green house as a result of this thermal radiation make space inside the greenhouse warming.
2. Greenhouse effect
- Greenhouse effect, effet de Serre comes from the French, by the mathematician, physicist Jean Baptiste Joseph Fourier Frenchman was first named in 1824 refers to the effect that occurs when radiant energy of the sun's rays, through windows or glass roof and make the entire space inside the heating up.
- let us imagine the following simple: greenhouse gases contained in the atmosphere like a thick glass plate covered the Earth, this time based on the principle of the greenhouse effect, solar radiation, when the Earth will be shining down greenhouse gases retained, resulting in making the whole atmosphere and heating up the Earth which also heating up.
- Since then, we define, the greenhouse effect:
"the phenomenon of short-wave radiation of the Sun through the atmosphere to ground and be reflected back into the long-wave thermal radiation and some atmospheric gases absorb through which makes the warming atmosphere, called greenhouse effect "
3. Greenhouse gases
- Greenhouse gases are gases capable of absorbing the long-wave radiation (infrared) is reflected from the Earth's surface when illuminated by sunlight, then back to the left to dissipate heat soil, causing the greenhouse effect.
- the main greenhouse gases include water vapor, CO2, CH4, N2O, O3, CFC gases
- the composition of greenhouse gases in the atmosphere
's chemical composition and gas 78% atmospheric nitrogen gas (N2), 21% are Oxygen (O2), 1% other gases remaining is mainly the greenhouse gases such as carbon dioxide (CO2), water vapor, Nitrious Oxide (N2O) , Methane (CH4), ozone (O3).
greenhouse gases in the atmosphere of 1% with the following components:
+ CO2: 56%
+ CFC: 13%
+ CH4: 18%
+ O3: 7%
+ N2O: 6%
4. The greenhouse type
a) atmospheric greenhouse effect
is a natural greenhouse effect, has a positive impact specific to Earth thanks to the atmospheric greenhouse effect that Earth's temperature is heated up to 380C , meaning that in practice, if there is no atmospheric greenhouse effect, the average temperature on the left will be 150C.
b) the greenhouse effect humanity
is the greenhouse effect due to human activities cause, namely from the everyday activities such as industrial production, transportation, fuel burn ... leads to the concentration of greenhouse gases increases, since then, gradually warming atmosphere gaynen the negatively affecting all life on Earth.
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