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The history of physics is full of great scientists like Galileo, Newton or Einstein, etc., Whose contributions have been decisive, but also a large number of scientists whose names do not appear in textbooks. There is no isolated genius who suddenly comes up with the key idea that changes the course of science. Progress in scientific progress occurs not only isolated anddiscontinuous contributions of some great minds.
A Newton not think the law of universal gravitation to see the famous falling apple sitting in a tree nearby. Few know that although Newton first formulated a complete theory of gravitation, Hooke twenty years earlier had concluded that "it would seem that material objects were attracted to the center of the Earth with a force inversely proportional to thesquare of the distance that separates them. "
Many other examples can be mentioned, that would confirm that the evolution of the ideas of physics and the emergence of new theories are facts that occur with much greater continuity than suggested textbooks.
There are supporters of the use of history in teaching physics for several reasons:
1. To assess the current state of our scientific knowledgecompared to previous periods.
2. As facts we must know to increase our culture.
3. To motivate students interested in philosophical and social aspects of science.
4. The most important aspect of the history of science, in our view, is the possibility of acquiring a current and rigorous development of our picture of the physical world, which is not infrequently at odds with the image that wehave simplified cash, or who have some textbooks.
This idea is not born, contrary to what might appear, a technological development or the need to explain a set of phenomena, but a metaphysics of nature (the set of principles that govern our representation of the world), prepared by Descartes, Newton and Kant modified by influencing Oersted and Faraday, and opposed to the dominant theories ofaction at a distance from the followers of Newton (Laplace, Ampere, etc.) and can be summarized as:
Newton:
• Universe corpuscles consisting of large and empty space.

• central forces acting at a distance and instantly.
• Forces inversely proportional to the square of the distance.
Faraday:
• The existence of a force field as the only physical substance.
• finite speed of propagation of anychange in the intensity of the force.
• Unification and interconvertibility of different types of forces.
Maxwell assumed the immense legacy of Faraday, making some changes. With him the idea of field acquires a precise mathematical formulation. Maxwell's equations are one of the most brilliant achievements in the history of physics, culminating with the discovery of electromagnetic waves byHertz.
It also describes the contributions of Lorentz, creator of electrodynamics and Einstein with his theory of relativity leads to the disappearance of the ether and the birth of a new mechanic.
Electromagnetism is a theory of fields. The explanations and provides predictions are based on vector physical quantity dependent on the position in space and time. Electromagnetism describes macroscopicphysical phenomena involved in which electric charges at rest and in motion. It uses electric and magnetic fields and their effects on solid, liquid and gaseous. As a macroscopic theory, ie, applicable only to a very large number of particles and large distances on these dimensions, electromagnetism does not describe atomic and molecular phenomena, for which it is necessary to use Quantum Mechanicsand Modern Physics .
The laws used in solving the problems of practical applications of electromagnetism are:
 
  1. Force on a charged particle in an electric field. - According to the definition of intensity of electric field, the force acting on a charged particle with charge q in an electric field E is given

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