Gas dioxide, and air expand to the same extent over the same 80 kelvin interval. He noted that, for an ideal gas at constant pressure, the volume is directly proportional to its temperature: In 1802, Joseph Louis Gay-Lussac published results of similar, though more extensive experiments. Gay-Lussac credited Charles' earlier work by naming the law in his honor. Gay-Lussac himself is credited with the law describing pressure, which he found in 1809. It states that the pressure exerted on a container's sides by an ideal gas is proportional to its temperature. In 1811, Amedeo Avogadro verified that equal volumes of pure
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