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Wind power stations convert the kinetic energy of the wind into electricity.
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Biogas can be produced from organic material (manure, plant waste, organic waste) using bacteria. Biogas is a mixture of methane and carbon dioxide; burning...
Geothermal power stations convert energy of hot, high-pressure water found in deeper layers of the Earth into electricity.
This animation demonstrates how solar energy can be utilised.
The huge dam built on the Colorado river in the US was named after a former American President.
Nuclear power plants convert the energy released during nuclear fission into electric power.
Solar power stations convert solar energy into electricity.
Tidal power stations utilise the daily fluctuation of the water level for producing electricity.
The purpose of the electricity supply network is to provide electricity for consumers.
Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.
In a passive house a comfortable inner temperature can be ensured without the use of traditional heating and cooling systems.
Thermal power stations convert energy released during the combustion of fossil fuels or renewable resources into electricity.
Wind, as an external force, plays an important role in shaping deserts.
Wind, as an external force, plays an important role in shaping coastal areas and steppes.
The most important types of local winds are the sea-land breeze, the mountain-valley breeze as well as the downslope winds.
Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.
System that satisfies consumers’ demands of water supply, wastewater disposal, electricity, heat and gas supply and telecommunication.
A transformer is a device used for converting the voltage of electric current.
Machines converting the energy of flowing or falling water into useful forms of power were already in use in the Middle Ages.
Machines converting the energy of wind into useful forms of power were already in use in the Middle Ages.
This animation demonstrates the main sources of air pollution: agriculture, industry and urban settlements.
Electric current can be generated by rotating an armature loop in a magnetic field.
Pollution is the detrimental effect of human activity on the natural environment.