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The Idea to drive an Airship by solar electricity is going to be real.

The US-based Lockheed Martin Corporation has just startet a Prototype of the High Altitude Long Endurance-Demonstrator (HALE-D).

 

Last Updated (Saturday, 30 July 2011 10:46)

 

 


Since my last visit in a Cinema (TRON Legacy*) I want to know how the Internet could be visualized.

On the Wikipedia-Page about the Internet, there is a beautiful Picture (Internet_map_1024.jpg). But I can’t recognize something.

Much more useful to me are the drawings of Chris Harrison.

Due to reduction to the links between the big Cities, those drawings are more readable.

To show the connections between the computers in the world you have to known them. And if, how many links and from where they are coming and to where they are going. The Opte-Projekt tried to answer those questions. The results are beautiful graphics, showing the high complexity of the Internet.

One problem is the fact that links can exist physical and logical.  With other words: A physical data cable connects always two points. But via this cable several logic connections can be established, mostly even simultaneously.

One can try to display the physical links. But even then I didn’t get the links of the Internet. A logic connection of two computers somewhere in the world goes always over several physical links.

Displaying all these logic links of the Internet seems for me impossible, but fascinates me enormous.

 

*) In the movie, Kevin Flynn describes his attempt to display clusters of information moving through a computer.

Last Updated (Saturday, 30 July 2011 10:59)

 

Now agricultural towers are coming to town?

We humans multiply us on Earth, without the possibility to expand. Not later than in the Years around 2050 we will be more than 9 Billions. And all want to eat and drink!

Last Updated (Sunday, 12 June 2011 11:47)

 
Nearly silently the Fraunhofer ICT developes a storing technique which, at least in stationary range, can replace conventional Lead-Acid-Batteries: The Redoxflow-Battery. For that two liquid electrolytes flow through a membrane and generate electric power. The amount of  stored energy depends on the size of the tanks. So it is easy scalable.
Combined with solar panels on the roof of a House or a wind generator, can so a autonomous power supply be realized.But also linked to a power network can these accus deliver their stored energy over decades to the network. So can for example the morning-peaks be absorbed and following the power plants dimensioned smaller.
In the meantime even a use in electric cars is thinkable.
External Weblinks

Last Updated (Tuesday, 05 April 2011 08:46)

 

 


It is often said that photovoltaic cells do have a to low degree of efficiency for cost-effective use. This may be right, compared with large power plants. For that such large projects are really rare in this country. It is right, larger constructions need much space, due to the low degree of efficiency. Common Systems do have about 15 to 20% efficiency.

Gallium arsenide-cells (GaAs) reached in Labs about over 40%. More at Wikipedia

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Last Updated (Tuesday, 05 April 2011 08:37)

 
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