El cometa Halley

Aparición del commeta Halley el 5 de Octubre, año 11 a. de C. Mención en testimonios chinos. Lo menciona también un autor griego que lo vincula con la muerte de Agripa. No obstante, Jesús nació en alguna parte más o menos en este momento (la fecha que suele citarse es el año 4 a. de C., aunque es posible que fuera un poco antes: los Evangelios no traen ninguna fecha concreta).
Es posible que fuera esta aparición del cometa lo que inspirase al autor del Evangelio según Mateo la historia de la estrella de Belén. Ciertos astrónomos que han calculado el aspecto del cielo en el momento del nacimiento creen que la historia, de la estrella de Belén pudo haberla inspirado una conjunción (aproximación en el plano estelar) de los planetas Júpiter y Saturno y que por tanto no tenga nada que ver con ningún cometa.

El cometa Halley, Isaac ASIMOV

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Einstein papers

Three were the papers that Einstein published on Relativity Theory («On the Electrodynamics of Moving Bodies»), Suspended Particles («On the Motion of Small Particles Suspended in a Stationary Liquid, as Required by the Molecular Kinetic Theory of Heat») and Photoelectric Effect («On a Heuristic Viewpoint Concerning the Production and Transformation of Light»). In one last paper he added that in order to clarify that energy and mass HAD to be connected or everything he had said wouldn’t make sense, and he scribbled the E=MC2 famous equation («Does the Inertia of a Body Depend Upon Its Energy Content?»).
3 + 1 papers published in less than a year that changed physics history. After going through them all, I not going to pretend that I understood everything because I missed some points, but I am going to argue that every science student should compulsory read them. Engineers, Mathematicians, Physics and everyone brave enough to survive some formulas has so much to learn from them.
Einstein always starts expressing his irritability facing theories that didn’t match. He believed in a unique explanation for a same phenomenon, no matter the perspective: a theory of everything (as the name of the Steven Hopkins movie that I mentioned I couple of entries ago says).
Through Einstein’s papers you mostly see mentions to other great scientist of the time. At the first look it might seem that he is synthetizing them, but actually he goes further and beyond. He takes what works in the theories, finds the mistakes and fixes them. It doesn’t matter if in order to do that he has to bomb the most popular beliefs, or to go to the roots of space and time. Einstein used tones of critical analysis and philosophical thoughts, and just a few new equations. He was more into the simplifying mood, but the only equation he ‘invented’ changed the world.
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