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
Status of same-sex marriage in a state where those statuses were legally recognized, regardless of the state in which the employee worked or resided. Accordingly, even if an employer had employees working where same-sex or common law marriage was not recognized, those employees' spouses would trigger FMLA coverage if an employee was married in one of the states that recognized same-sex marriage or common law marriage. The "Obergefell v. Hodges" decision on 26 June 2015 eliminated the distinction between same-sex marriage and opposite-sex marriage at the federal level, holding that marriage was a constitutional right, and that same-sex couples were entitled to equal rights