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
Public opinion of same-sex marriage in the United States opposed and 7% with no opinion. The poll also revealed that 53% of the population in the states that did not allow same-sex couples to marry at the time approved of same-sex marriage. 50% of respondents agreed that the Equal Protection Clause of the Fourteenth Amendment to the United States Constitution guarantees the freedom to marry regardless of sex or sexual orientation, while 41% disagreed, and 9% had no opinion. The same poll also found that 81% of people believed that businesses should not be allowed to refuse to serve gays and lesbians. 16% disagreed, and 3% had no opinion.