The maximum S-amplitude, given in mm scale of a recorded earthquake by a standard seismometer at 100 km away from the epicenter, is converted to magnitude (M) by the following relation. About 900-1,000 times more energy.
MG is a British automotive marque registered by the now defunct MG Car Company Limited, a British sports car manufacturer begun in the 1920s as a sales promotion sideline within W R Morris's Oxford city retail sales and service business by the business's manager, Cecil Kimber.
History. Myasthenia Gravis (MG) is a chronic autoimmune disorder of neuromuscular transmission resulting in muscle weakness. The term myasthenia is Latin for muscle weakness, and gravis for grave or serious.Thomas Willis first described a patient with MG in 1672.There were other sporadic case descriptions over the years and in 1900, Campbell and Bramwell collected 60 cases of MG from the literature.he term myasthenia is Latin for muscle weakness, and gravis for grave or serious. Thomas Willis first described a patient with MG in 1672. There were other sporadic case descriptions over the years and in 1900, Campbell and Bramwell collected 60 cases of MG from the literature.