Sun, energy

The Swedish National Energy Agency has set a 2006 target to reform hydrogen and oxygen from water with sun energy through artificial photosynthesis. 

Erosion is driven by water + internal terrestrial energy + sun energy... 

Radiant energy comes from a light source, such as the sun. Energy released from the sun is in the form of photons. These tiny particles, invisible to the human eye, move in a way similar to a wave. 

The heat transfer capacity of sodium is also successfully demonstrated in a sun energy conversion plant, where it is applied to store the energy and to transfer it from the radiation receiver to the steam generator. The energy storage in the hot sodium tank helps to operate the plant even after sunset. 

Figure 2.75 Phylogenetic interrelation of organisms. Eukaryotes dominate the Earth surface and use Sun energy. Prokaryotes and eubacteria (bacteria) and archaea (archaebacteria) are mostly chemolithoautotrophic.

Sulphates are most competitive acceptors in the reducing environment and they slow down other reduction processes until their concentration drops below 1.0 mmole-T. With exhaustion of free oxygen, nitrate nitrogen, Mn and Fe oxides and sulphates the store of easily available sun energy, accumulated by the pasturable trophic chain, end, and Eh value declines below —0.25 V. Along with this ends the activity of chemo-litho-heterotrophs, which used carbon of the organic matter and electrons for its oxidizing from oxidized mineral components. 

Kladieva, A. S. Dzhalmukhambetov, A. U. Calculations in the MATLAB environment of the latitude-temporal distribution of the sun energy on the Earth surface. Projecting of the engineering and scientific applications in the MATLAB environment materials of the IVth Russian scientific conference. Astrakhan Pubhshing House As-trakhan University)), 2009 pp. 146-155. 

The photosynthesis is driven by sun energy, water and carbon dioxide, and without light no new formation of organic material can occur. 

Fig. 2. The cumulative consumption of the world s reserves of fossil Sun energy, calculated on the basis of the consumption in 1975 and a 5% atmual acress.

As microalgae are growing very fast and harvesting can be done every few days, they are a very significant raw material for the production of different products, such as astaxanthine, carotenoids, lipids for bulk chemicals or biodiesel, protein for animal food, raw material for biogas production, and finally as natural process to convert carbon dioxide to oxygen by means of sun energy. 

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