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 and the family biological inequality between opposite-sex and same-sex couples, an inequality that is raised in American legal circles in light of the Equal Protection Clause of the 14th Amendment to the United States Constitution. In 1996, Congress passed the Defense of Marriage Act that defines marriage in Federal law as "a legal union between one man and one woman as husband and wife". Congressional record, a House Report (H.R. 104-664 at 33, 104th Congress, 2nd Session, 1996), states that procreation is key to the requirement of a valid marriage being a union and of one man and one woman. It has been