In the first decade of the 20th century, Einstein produced the theory of the conversion of mass into energy, E=mC(2), which was confirmed by laboratory observations. A new theory of the atom was devised by the English physicist Rutherford in 1913.
Methylphenidate, Methylin. Generic Ritalin. Methylphenidate (methylin) is a moderately priced drug used to treat attention-deficit hyperactivity disorder (ADHD). It is also used to treat narcolepsy. This drug is slightly more popular than comparable drugs. It is available in brand and generic versions.
Marketed under numerous brand names, the best known of which is Ritalin, methylphenidate and other amphetamines function as central nervous system (CNS) stimulants, and have been FDA approved for the treatment of both childhood and adult attention deficit hyperactivity disorder (ADHD) as well as narcolepsy in adults.lthough it is not known exactly how Ritalin works, it is believed to increase the flow of the neurotransmitters dopamine and norepinephrine, chemicals that carry the signal between neurons (cells of the nervous system).