However, learning about science and technology with holistic vision is not intended to discredit the efforts to develop scientific and technological knowledge, if not clear as they enter the emerging sustainable culture of XXI century, pointing limits, benefits and dangers when they are not understood properly. Thus, it is important to know what is the vision of the world because it will determine whether we are in the ability to guide our goals and educational efforts. In short, the human being is more than technological processes as well, education is a process to raise awareness. In this context it is important that we realize we need an ecological education in order to aspire to a sustainable society, one that can guarantee our long-term survival with quality of life.
Unfortunately, in schools today are not educated to preserve the environment, but, paradoxically, to plunder, it realizes that the educational processes used by these schools and education are inadequate to the need for a sustainable society. A diagnosis made by the presidency of the republic said that an alarming aspect of education in Mexico is the poor academic performance, while another is the educational content for practical life in the culture of the students. So, being that education should be assumed as a rewarding experience in everyday life becomes a routine without any real sense. On issues like this, it is clear that students continue preying why have not transformed, do not feel or recognize its connection with nature, no love or respect for it or for animals.
The wave soldering process took its name from the fact that the process uses a tank containing the molten solder. In this process, the electronic components are inserted into the PCB in its right place and they the PCB is passed through a wave solder metal. The molten solder passing through the area discovered metal and creates an electrical connection between components. The areas in which the connections are not made, is protected by solder mask. The wave soldering process is faster than the manual welding process, but creates a quality product in less time compared with that in manual welding. Wave soldering process can be used for both holed PCB or PCB mounted. But in the case of the circuit board mounted electronic components are located on the PCB, with the help of glue, before posing for the solder wave. Now together with hole most of the components have been replaced by exterior mounted components, the wave solder reflow has been replaced by welding method in a kind of large-scale electronic application.