The Etymology of Slang Sexual Terms. The word horny sexually excited, lecherous derives from an interesting yet not surprising source. As early as the mid-18th century, an erection was known as a horn or the horn, simply because it looked a bit like one.James Joyce even used the term in his Ulysses.he word horny sexually excited, lecherous derives from an interesting yet not surprising source. As early as the mid-18th century, an erection was known as a horn or the horn, simply because it looked a bit like one.
Charles' Law. Statement. For a fixed mass of gas at constant pressure, the volume is directly proportional to the kelvin temperature. That means, for example, that if you double the kelvin temperature from, say to 300 K to 600 K, at constant pressure, the volume of a fixed mass of the gas will double as well.
According to Dalton's law, the total pressure of a gas mixture is equal to to the sum of the pressures that each gas in the mixture would exert independently. the partial pressure of a gas in a dry gas mixture is thus equal to the total pressure times the percent composition of that gas in the mixture.