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relativity and unified field theory were all arrived at by mathematical calculations. Two excerpts from The Universe and Dr. Einstein will clarify this point.
'All attempts failed until Plank found by mathematical means an equation.. the extra-ordinary feature of his equation was that it rested on the assumption that radiant energy is emitted not in an unbroken stream but in discontinuous bits or portions which he termed quonta.
Plank had no evidence for such an assumption, for no one knew anything (then and now) of the actual mechanism of radiation. 27
The unified field theory..sets forth in one series of mutually consistent equations the physical laws governing the two fundamental forces of the universe, gravitation and electromagnetism.28
Quite a few of such mathematically derived principles are found deficient afterwards on passage of time and are corrected, entailing changes in several other by-laws based on such enunciates.
For more than two centuries, experimental evidence and scientific enunciates emphatically maintained that light exists as wave-forms and yet, Einstein's photoelectric law proved with as much conviction that light consists of particles called 'photons'. Similarly, in 1925, Louis-de-Brogley, a young scientist in France, proposed that, if electrons are considered as special wave-forms and not as particles, many queries lacking satisfactory explanations can be solved. "This audacious concept flouted two decades of quantum research in which physicists had built up rather specific ideas about elementary
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