Angel "Java" Lopez en Blog

Publicado el 22 de Octubre, 2016, 15:44

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La unificación de Maxwell fue la primera de varias. Leo:

Another fundamental unification of two types of phenomena occurred in the late 1960s, about one-hundred years after the work of Maxwell. This unification revealed the deep relationship between electromagnetic forces and the forces responsible for weak interactions. To appreciate the significance of this unification it is necessary first to review the main developments that occurred in physics since the time of Maxwell.

Esa unificación de los sesenta fue la que impulsó de nuevo el camino de la unificación, que había quedado algo congelado, al no haber avances concretos. Pero para llegar a esa unificación hubo que pasar por varios desarrollos:

An important change of paradigm was triggered by Albert Einstein"s special theory of relativity. In this theory one finds a striking conceptual unification of the separate notions of space and time. Different from a unification of forces, the merging of space and time into a spacetime continuum represented a new recognition of the nature of the arena where physical phenomena take place. Newtonian mechanics was replaced by relativistic mechanics, and older ideas of absolute time were abandoned. Mass and energy were shown to be interchangeable.

El otro gran avance de la física en los comienzos del siglo XX fue la física cuántica:

Another change of paradigm, perhaps an even more dramatic one, was brought forth by the discovery of quantum mechanics. Developed by Erwin Schrödinger, Werner Heisenberg, Paul Dirac and others, quantum theory was verified to be the correct framework to describe microscopic phenomena. In quantum mechanics classical observables become operators. If two operators fail to commute, the corresponding observables cannot be measured simultaneously. Quantum mechanics is a framework, more than a theory. It gives the rules by which theories must be used to extract physical predictions.

De la unión de ambos desarrollos nacieron las teorías de campos cuánticos. Seguiremos en el próximo post.

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Angel "Java" Lopez
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Por ajlopez, en: Ciencia