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.
Is Ritalin Effective for Adult ADHD? Methylphenidate was the first drug to be used in the treatment of ADHD, originally to treat children in the 1960âs. Since its discovery, methylphenidate has been used to treat ADHD in both children and adults for many years.