![]() ![]() But its phrasing is more comprehensive for Einstein was thinking not only of mechanical laws laws but of the laws governing light and other electromagnetic phenomena. It incorporates the Galilean Relativity Principle which states that mechanical laws are the same for all uniformly moving systems. This simple statement is the essence of Einstein’s Special theory of Relativity. From this he drew a broader generalization, and asserted that the laws of nature are the same for alls uniformly moving system. If the velocity of light is constant regardless of the earth’s motion, he reasoned, it must be constant regardless of motion of any Sun, moon, star, meteor, or other syatem moving anywhere in universe. ![]() Einstein seized on this as a revelation of universal law. The one indisputable fact established by the Michelson-Morley experiment was that the velocity of light in unaffected by the motion of the earth. He began by rejecting the ether theory and with it the whole idea of space as a fixed system or framework, absolutely at rest, within which it is possible to distinguish absolute from relative motion. In 1905, when he was just twenty-six years old, he published a short paper suggesting an answer to the riddle in terms that opened up a new world of physical thought. “Among those who pondered the enigma of the Michelson-Morley experiment was a young patent office examiner in Berne, named Albert Einstein. In 1905 Einstein rejecting the ether theoryĪlbert Einstein rejecting the ether theory can be read on the book ‘Universe and Dr.Einstein’, by Lincoln Barnett, London, 1949, page 38. This led to considerable theoretical work to explain the propagation of light without an aether.”( wikipedia) The negative outcome of the Michelson–Morley experiment suggested that the aether was non-existent. By the late 1800s, the existence of the aether was being questioned, although there was no physical theory to replace it. As the nature of light was explored, especially in the 19th century, the physical qualities required of the aether became increasingly contradictory. The concept was the topic of considerable debate throughout its history, as it required the existence of an invisible and infinite material with no interaction with physical objects. The assumption of a spatial plenum of luminiferous aether, rather than a spatial vacuum, provided the theoretical medium that was required by wave theories of light. “Luminiferous aether, aether or ether, meaning light-bearing aether, was the postulated medium for the propagation of light.It was invoked to explain the ability of the apparently wave-based light to propagate through empty space, something that waves should not be able to do. There is a possibility that luminiferous ether truly exists, but it cannot be proven. However various kinds of experiments had been made, among other was an experiment conducted by the American Scientists Michelson and Morrey 19th century, and all of those experiments failed to detect the presence of luminiferous ether, so that the ether is deemed non-existent. The classical scientists such as Aristotle, Rene Descartes, Sir Isaac Newton and others believed that the light of the stars reaching us on earth crept spreading through a medium the so-called luminiferous ether. The luminiferous aether: it was hypothesised that the Earth moves through a “medium” of aether that carries light ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |