1. By: Jelena Križanac and Petra Mišak

2.  solar cells produce direct current power which fluctuates with the sunlight's intensity  for practical use this usually requires conversion to certain desired voltages or alternating current, through the use of inverters

3.  solar power is the conversion of sunlight into electricity, either directly using photovoltaics, or indirectly using concentrated solar power  concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam  photovoltaics convert light into electric current using the photoelectric effect SOLAR POWER

4.  solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies  solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity, solar architecture and artificial photosynthesis, which can make considerable contributions to solving some of the most urgent energy problems the world now faces

5.  passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air

6. The energy payback time of a power generating system is the time required to generate as much energy as was consumed during production of the system.

7. And this is how does solar energy work  Solar energy enables production using heat engines or photovoltaics. Once produced its applications limited only by human imagination

8.  Greethings from Zagreb: Jelena and Petra