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.
Ritalin. (Methyphenidate, Concerta, Metadate, Methylin). Although Ritalin is widely categorized as a stimulant drug and does contain an amphetamine-like backbone, however it is a much more complex structure. It is technically in a class of drugs called Norephinephrine Dopamine Reuptake Inhibitors or NDRIs.