Brazilian Musicalidade Ancestral of the Brazilian musicalidade the aboriginal peoples who inhabited the Brazilian territory before the arrival of the Europeans had understood a great variety of tribes and nations, of material culture and also sufficiently diversified spiritual, although to have common points how much to the life style (FAUSTO, 1997). In the vast cultural universe we find aboriginal music Brazilian, with its melodiosos sounds, of proper and native characteristics, that associates to it I sing and the dance if he becomes importantssima in the socialization of the tribes. ' ' Before more nothing, she will be necessary to understand that aboriginal music is, basically, a social phenomenon, coletivizado in such a way in its production as in its listening. Valley to say, in aboriginal music all simultaneously participate as producing and fruidores of music (...). Aboriginal music almost always combines to a collective event or an important social function for all the community? as a party, one I sing of work, an incitation to the war, a ritual of ticket, a encantamento, an exercise of collective memory, a mitolgica dramatizao. (...) It must still be added that the powerful social dimension of aboriginal music not necessarily has to take the form of a collective manifestation. I also sing it emitted individually has its place, but she is necessary to understand that this I sing always takes care of to a well marked social function: it can be the conducting wire of an used encantamento to cure illnesses, or to evoke rain, in the benefit of all the community, or can be the song that if opens for the register of the collective memory, or for the dramatizao of a myth through whose reproduction the entire community looks a form of autoconhecimento' '. (Jose D? Barros installation). In this direction, with the...
Energy And History When watching at ours around it is observed that the plants grow and that the animal move, that the machines and tools carry out the different tasks. The energy is a property associated to the objects and substances and are pronounced in the transformations that happen in the nature. The energy is pronounced in physical changes, for example, when elevating an object, transporting it, to deform it or to warm up it. The energy is also made present in the chemical changes, like a burning a wood brush or in the water decomposition by means of the electrical current. The man, throughout his history has realised by means of his own physical effort activities that consumed energy, leaning in the domestic animal like the horses, oxen, etc. Until the arrival of the industrial revolution, the use of mechanical systems to provide energy was limited the water or wind mills. Any other application of these technologies for the accomplishment of works was from little yield. Of the power plants, first and more important of the used ones by the man it was the firewood, due to the abundance of forests that proliferated throughout of the world. Other point sources were only used there where they were accessible, such as superficial filtrations of petroleum, coal or asphalts. In the average age the firewood began to be used to make charcoal with whose ores metals were obtained, and that later would come to be replaced by the mineral coal in the principles of the industrial revolution.

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