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 and required the state to recognize same-sex marriages. On November 12, 2008, the first marriage licenses to same-sex couples were issued and the following year, the state enacted gender-neutral marriage legislation. In August and September, the national political parties addressed same-sex marriage in their party platforms. The Democratic National Convention adopted a platform that "oppose[s]the Defense of Marriage Act and all attempts to use this issue to divide us" and suggested support for same-sex marriage: "We support the full inclusion of all families, including same-sex couples, in the life of our nation, and support equal responsibility, benefits, and protections." The