- published: 28 Aug 2015
- views: 177595
A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown. These structures range in size from small sheds to industrial-sized buildings. A miniature greenhouse is known as a cold frame. The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external ambient temperature, protecting its contents in cold weather.
Many commercial glass greenhouses or hothouses are high tech production facilities for vegetables or flowers. The glass greenhouses are filled with equipment including screening installations, heating, cooling, lighting, and may be controlled by a computer to optimise conditions for plant growth.
The explanation given in most sources for the warmer temperature in a greenhouse is that incident solar radiation (the visible and adjacent portions of the infrared and ultraviolet ranges of the spectrum) passes through the glass roof and walls and is absorbed by the floor, earth, and contents, which become warmer and re-emit the energy as longer-wavelength infrared radiation. Glass and other materials used for greenhouse walls do not transmit infrared radiation, so the infrared cannot escape via radiative transfer. As the structure is not open to the atmosphere, heat also cannot escape via convection, so the temperature inside the greenhouse rises. This is known as the "greenhouse effect". The greenhouse effect, due to infrared-opaque "greenhouse gases", including carbon dioxide and methane instead of glass, also affects the earth as a whole; there is no convective cooling as air does not escape from the earth.
Every morning when sun is dawning
You'll see him down on the beach
Look out girl, beware
Better take good care
Keep yourself out of reach
He's out to make a killing girl
He's out to make a score
And maybe if you're willing girl
He's gonna ask for more
Oh oh Figaro, He's got magic oh oh
Oh oh Figaro, He's a Romeo oh
See him down on the beach
He'll be looking for someone new
Searching down on the beach
Figaro, Figaro
When he plays guitar
At the disco bar
He's the star of the show
As the girls go by
He just winks an eye
See those pretty girls glow
He's out to make a killing girl
When dancing on the floor
And maybe if you're willing girl
He's gonna ask for more
Oh oh Figaro, He's got magic oh oh
Oh oh Figaro, He's a Romeo oh
See him down on the beach
He'll be looking for someone new
Searching down on the beach
Figaro, Figaro
Oh oh Figaro, He's got magic oh oh
Oh oh Figaro, He's a Romeo oh
Oh oh Figaro, He's got magic oh oh