My
topic “Environmental Technology” is a very widespread field as it
includes everything that helps to weaken negative impacts of humans
on the environment. These negative impacts involve phenomena like air
pollution, water pollution, pollution of the soil, global warming and
many more. All possible solutions to such problems can be counted as
environmental technology. Popular examples for this are
photovoltaics, wind energy, water purification or also just
simple recycling. Questionable energy sources such as nuclear power
could also be included if it does not produce radioactive waste, like
the fusion-fission hybrid reactor does not. The main point is that
the destruction which is caused by humans living on this planet is
reduced.
Montag, 21. April 2014
Sonntag, 20. April 2014
CAJ 4 - Nuclear Power
For
a change of topic in my CAJ, I decided to look into nuclear power as
an environmentally friendly option. I am aware that the common
fission reactors are not really considered environmentally friendly,
even though many people feel that way. Granted, they to not emit
greenhouse gases. However, they are insecure and produce huge amounts
of radioactive waste. To these problems there already have been found
solutions, which results in two better ways to generate energy
through nuclear power.
The
first and probably more established idea is the fusion reactor. This
process does not split the atoms, like in typical fission reactors,
but join them. There are many advantages to this idea, like lower
waste, more security and higher availability of the resources needed.
However, the technology is not quite far enough and many more
billions of dollars have to be spend for fusion power research.
The
second solution is not as known as the first one but maybe the more
realistic one. This concept is called nuclear fusion-fission hybrid
and combines nuclear fusion and fission. It was invented back in the
1970s but has not received much interest because fusion seemed more
promising. Now that research has shown that fusion power will not be
implemented soon, the hybrid version has attracted attention again.
As in fusion power alone the energy input is still higher than the
energy output, the hybrid version is the only way to make fusion
power profitable. Through this hybrid enough energy is produced,
waste is reduced to the minimum and safety issues shrink extremely.
That is because the fission depends on neutrons provided by the
easily stoppable fusion reaction and if the fusion is turned off, the
fission reaction stops almost instantly. All this means that this way
of generating energy seems reasonably safe and clean.
Donnerstag, 10. April 2014
Photography Project Description "Migrant Mother"
The
black and white picture “Migrant Mother” taken by famous
photographer Dorothea Lange shows a Native American woman, probably
in her 30s, holding a little baby in her arms while being surrounded
by two toddlers leaning against their mother’s shoulder. They are
hiding their faces, be it out of sombreness, embarrassment or shyness
in front of the camera. The simple, slightly ragged yet proper
clothes cannot distract from the sad and sorrowful atmosphere that is
created by the little family huddled tightly together outside their
simple tent. Her hand’s fingertips are resting thoughtfully against
her lower jaw. When closely regarding the mother’s face in detail
one can see that her face has been wrinkled by raw weather and the
worries of her unforgiving life. With her lined forehead and her gaze
into the distance, she seems to be troubled by her and her children’s
uncertain future. Despite her obvious misery there lies a certain
determination and strength in her appearance, as if she was a lonely
wolf mother protecting her pups from the woes of the world.
Dienstag, 1. April 2014
CAJ 3 - Rhetoric Comment
I comment on the rhetoric in this article:
The overall
rhetoric in the article “Solar Roadways: Crackpot Idea or Ingenious
Concept?” written by Aaron Saenz is not very convincing. For me the
main fault is that there is no ethical appeal. The author writes as
if he was an expert on this topic and presents many arguments against
the solar roadways but he never even tells the reader who he is or
what his connection to the topic is. His pathetic appeal is not much
better either. Throughout the whole article he uses no pathos. The
main emotion I get from reading the article is anger but not because
the author provoked it but because his writing style and his
arguments are so bad. If depressing and angering the reader is his
goal, he achieves it. The logic in the article is not satisfying
either. He argues that solar roadways are too expensive and that
asphalt roads are cheaper because they are expensive only on highways
and not on small roads. However, he doesn’t mention that asphalt
roads can never pay for themselves and therefore solar roadways are
cheaper in any case, even if it takes 50 years to pay off. All in all
the rhetoric in this article is very unconvincing.
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