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Today's lesson focuses on important gas laws, starting with Boyle's law discovered by Robert Boyle in 1662. Boyle's law states that, at a constant temperature, the volume of a gas is inversely proportional to the pressure. We then move on to Charles' law, which states that at a constant pressure, the volume of a gas is directly proportional to the absolute temperature. Dear students, today we are going to discuss important gas laws, the fundamentals of gas laws. First we are going to study Boyle's law. What is Boyle's law? Boyle's law is discovered by Robert Boyle in 1662. Boyle's law states that, at a constant temperature, the volume of a given mass of a gas is inversely proportional to the temperature. Understand? Boyle's law states that, at a constant temperature, the volume of a given mass of a gas is inversely proportional to the temperature. Next law is Charles' law. Charles' law states that, at a constant pressure, Boyle's law at a constant temperature, Charles' law but at a constant pressure. Charles' law states that, at a constant pressure, the volume of a given mass of a gas is directly proportional to the absolute temperature. Okay.