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
Same-sex marriage in the United States Hodges" ended all inter-state legal complications surrounding same-sex marriage, as it orders states to both perform the marriages of same-sex couples and to recognize the marriages of same-sex couples performed in other states. According to the federal government's Government Accountability Office (GAO) in 2004, more than 1,138 rights and protections are conferred to U.S. citizens upon marriage by the federal government; areas affected include Social Security benefits, veterans' benefits, health insurance, Medicaid, hospital visitation, estate taxes, retirement savings, pensions, family leave, and immigration law. Since July 9, 2015, married same-sex couples throughout the United States have equal access to all