Work and energy for the development of what is necessary.
In situations of daily life you use the word "energy" and "work". Surely, you hear expressions like: save energy, do not waste it! It takes a lot of energy for that job! A person can do work thanks to the energy provided by food. A car can climb a hill for the fuel that we put it.
What is energy? What is work? Energy is neither substance nor matter, in reality it is a concept, an abstraction and the language of science instead of saying what it is, are we interested in knowing about energy? and the intimate relationship he has with work.
E. Solar: It is captured by photovoltaic panels.
E. Hydraulics: It is captured by the fall of water.
E. Wind: It is captured by the force of the wind.
E. Electric: It is captured by the movement of electric charges
E. Nuclear: It is captured by the fusion or fission of nuclei in an atomic reactor.
With this post I hope you continue to develop understanding for energy and work in relation to various situations in the environment ...
The power of people is limited, we can train ourselves to make faster and faster a walk, do certain domestic or commercial jobs, improving our "brands", that is, the effective power that we develop. But we are always going to need a lot of our energy, and at present, we can not meet the needs of society.