They also include solar power for agricultural applications, the engineering design of grain silos, and the mechanical strength of eggshells.
Two of the strongest constraints are the availability of solar power and the avoidance of extremely low temperatures.
Solar power for direct heating and cooking is still yet to be popularized.
The combination of multiple sound sources, in conjunction with individual time signatures and the fluctuations of the solar power supply give the sound scape an un-cannily natural presence.
The new industries such as wind and solar power always seem to me to remain tantalisingly in the future.
We hear so much nowadays about wind power, solar power and the liquefaction of coal.
In addition, thanks to such developments as cheap solar power and micro-credit, these poor countries are starting to become profitable markets for major companies.
In some parts of the world solar power is already being used for domestic and commercial purposes.
