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.
In Marilyn Wedge's blog post What We Can Learn From Michael Phelps About ADHD, she writes, Ritalin is a crutch Feeling that the drug was a crutch, Phelps decided to learn to use his mind to focus and control himself in the class room [sic].