Photovoltaics
Photovoltaics is based on the ability of certain materials to convert light directly into electricity. The most common application of solar energy collection outside agriculture are solar water heating systems. Although the basic physical principle has been known for a long time, the technical development of solar cells is far form complete, and further improvements can be expected in the future.
Solar energy could be used for example for power in the oven or heating hot water for a bath. The structure of use is the same.
Picture

Question:
In which direction the solar cells should be aligned best?
1. east
2. west
3. nord
4. south
Vocabulary
solar Energy - Solar Energie
solar cells - Solarzellen
photovoltaics - Photovoltaik
Link: Solar energy
Team Luca Maschek and Diego Di Martino