Mass-to-charge ratio refers to the molecular or atomic mass number and "z" to the charge number of the ion; however, the quantity of "m"/"z" is dimensionless by definition. An ion of 100 atomic mass units ("m" = 100) carrying two charges ("z" = 2) will be observed at "m"/"z" = 50. In the 19th century, the mass-to-charge ratios of some ions were measured by electrochemical methods. In 1897, the mass-to-charge ratio of the electron was first measured by J. J. Thomson. By doing this, he showed that the electron was in fact a particle with a mass and a charge, and that
Scarlett (given name) Scarlett (given name) Scarlett is a feminine name derived from an English surname with an occupational meaning, referring to a person who sold cloth of scarlet. It gained popularity due to the character Scarlett O'Hara in Margaret Mitchell's best-selling novel "Gone with the Wind" and the film adaptation. The name was the 17th most popular name given to baby girls in the England and Wales in 2013 and the 30th most popular name given to baby girls in the United States in 2014. The name also has associations with the bright red color scarlet and, indirectly, with the Biblical scarlet