History of chemistry 1808, certain of his central ideas were soon adopted by most chemists. However, uncertainty persisted for half a century about how atomic theory was to be configured and applied to concrete situations; chemists in different countries developed several different incompatible atomistic systems. A paper that suggested a way out of this difficult situation was published as early as 1811 by the Italian physicist Amedeo Avogadro (1776-1856), who hypothesized that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules, from which it followed that relative molecular weights of any two gases are the same as
History of same-sex marriage in the United States same-sex marriage licenses on October 21, 2013, following a September 27 state superior court decision that found an equal protection right of same-sex couples to marry. It reasoned that with the U.S. Supreme Court's recent action in "United States v. Windsor", couples in New Jersey civil unions lacked access to federal benefits they could now receive if married. Governor Chris Christie, who had vetoed legislation legalizing same-sex marriage in February 2012, filed an appeal to the New Jersey Supreme Court, but withdrew it after the court refused to stay the lower court's ruling. Eight New Mexico counties, either on the