Students:2009/2010 student themes: Difference between revisions

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There are a lot of different ways to create energy, but because of the limited capabilities and the growing ozone hole, it is important to use sustainable energy.  On one hand the ozone hole gets bigger because of the globalisation, flying by plane, using cars etc., on the other hand the globalisation can help US to get new systems of to use energy and to get all the materials for it. But the global warming and the accumulation of greenhouse gases in our atmosphere brings extreme weather events and rising sea levels (Curtis, Fred: Climate, Peak Oil, and Globalization: Contradictions of Natural Capital), just to name some of the consequences.  
'''Abstract – Sustainable Energy – Solar Energy'''
The other problem are the limited capabilities. Oil is getting low, the oil price already rose from $20 per barrel in 2001 to $70 per barrel in 2006 (Curtis, Fred: Climate, Peak Oil, and Globalization: Contradictions of Natural Capital).
In the future we will either run out of oil or it it will be too expensive that only rich people can use it. Also because of the ecologically harmful power stations electricity will be getting more expensive, and eventually run out (www.handelsblatt.com (14.11.2009)).
 
Especially because of the globalisation, the transportation and the high standard of living we will use more and more electricity capabilities. That is why it is important to think about other ways to produce energy.
One form of sustainable energy is the sun. Solar energy is one of the sustainable methods. There are also more techniques like wind power or using water for getting energy. The following paragraph will be written about solar energy; what it is, how it works and what the advantages and disadvantages are. In the beginning I briefly will describe in short form the technical way of this system, afterwards there will be a short term, then briefly talk about some other forms of sustainable energy systems. Following this I will move on to the advantages and the disadvantages of using solar energy. And at the end there will be written a conclusion this way of using sustainable energy.
In the 18th century the solar cell was invented by Horace-Bénédict de Saussure, A successful naturalist, who came up with the solar cell, similar to the one which is used today. In the 19th century Augustin Mouchot was the first person who used the convex mirror. This was the first step to refining this technique. It was also the first time that the energy of the sun was used for electricity (www.ht-handelsagentur.de (14.11.2009)).


In the face of the climate change and the narrowness of the fossil resources it is clear that the sustainable energies like water, wind and the sun belong to the future.


Solar energy means the energy which is produced by atomic fusion. We now know that the energy of the sun does not decrease, it stays constant. Parts of the energy get reflected and other components of the energy get absorbed and are changed into heat energy. And the remainder gets through down to the earth. How much of the sun energy reaches the earth depends on the humidity, the cloudiness and the length of the way the sunbeams needs to put back. The energy of the sun is five thousand times more then the energy  mankind needs. This already is one good reason to use the energy of the sun.
The text „Solar energy“ will give a short introduction of different systems for using sustainable energy and will also clarify that globalisation and the climate change has a lot to do with the narrowness of the fossil resources like oil. The essay demonstrates the disadvantages and advantages of different systems and it shows that not every system is ecologically worthwhile for each country. At the end there will be a perceptive in the future, what the politicians and companies do for using sustainable energy.  


 
In conclusion there can be said that there is still a lot of work to do that every country invest in our earth and is using sustainable energy systems. Also a lot has already happened in the past twenty years.
 
Bibliography:
 
Curtis, Fred: Climate, Peak Oil, and Globalization: Contradictions of Natural Capital
 
http://www.handelsblatt.com (14.11.2009)
 
http://www.ht-handelsagentur.de (14.11.2009)


== Fabian Siggemann ==
== Fabian Siggemann ==
LinaCS
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