11 JUN 2012 by ideonexus
The Chemical Decline in Energy
It is the destiny of wine to be drunk, and it is the destiny of glucose to be oxidized. But it was not oxidized immediately: its drinker kept it in his liver for more than a week, well curled up and tranquil, as a reserve aliment for a sudden effort; an effort that he was forced to make the following Sunday, pursuing a bolting horse. Farewell to the hexagonal structure: in the space of a few instants the skein was unwound and became glucose again, and this was dragged by the bloodstream all t...Levi describes with wonder the chain of events leading to an increase in entropy as energy is used up in the body.
28 JAN 2012 by ideonexus
Eucalyptus Forests as Solar Energy
Sir Edward has calculated that quick-growing Indian eucalyptus trees have a yield of nine and one-quarter tons of wood an acre a year. As the wood contains 0.8 per cent of the solar energy reaching the ground in the tropics in the form of heat, Sir Edward has suggested that in theory eucalyptus forests could provide a perpetual source of fuel. He has said that by rotational tree planting and felling, a forest of twenty kilometers square would enable a wood consuming power station to provide 1...Folksonomies: energy solar power
Folksonomies: energy solar power
Burning them to release the heat they have stored in chemical energy from the sun.