Diu physici materiam sentiebant specialem exsistere nomine ''aethere'' quae omne spatium inter corporibus complet.
Imprimis Einstein, cum anno [[1905]] suam theoriam [[relativitas specialis|relativitatis specialis]] invenit, aetherem existireexsistere negabat, sed iterum circum annum [[1920]] Einstein ipse invenit ideam aetheris necesse esse, ut una [[relativitas generalis|theoria relativitatis generalis]] satisfactoria sine [[actiones trans distantias|actionibus trans distantias]] creatur. <ref> [http://www.tu-harburg.de/rzt/rzt/it/Ether.html A. Einstein, "Aether and the theory of Relativity" University of Leyden, Germany, 1920] (Anglice): "Recapitulating, we may say that according to the general theory of relativity space is endowed with physical qualities; in this sense, therefore, there exists an ether. According to the general theory of relativity space without ether is unthinkable; for in such space there not only wonld be no propagation of light, but also no possibility of existence for standards of space and time (measuring-rods and clocks), nor therefore any space-time intervals in the physical sense. But this ether may not be thought of as endowed with the quality characteristic of ponderable inedia, as consisting of parts which may be tracked through time. The idea of motion may not be applied to it."</ref>
Novus aether, autem, Alberto Einstein non erat ex materia corporeali antiqua, nec ex partibus positiones distinctas habentibus; novus aether simpliciter erat sedes campi electromagnetici gravitatisque. In omni loco spatii temporisque, aether particulis corporibusque communicaturus est quantum et quo modo flexum est spatium tempusque.
