Jacques Alexandre Cesar Charles was a French scientist who lived from November 12, 1746- April 7, 1823. He specialized in the fields of mathematics, Physics, and hot air ballooning. Charles was also a serious inventor. He ascended the first helium balloon, and became interested in the thermal expansion of gasses. Finall
y, in 1787, he developed what we now call Charles's Law: A gas's volume is directly proportional to its temperature (degrees Kelvin) if the number of particles and temperature of the gas are constant. In other words, as the volume of a gas increases, the temperature will increase. If the volume of the gas decreases, the temperature of the gas will decrease.
This is a linear relationship, and can be written in the equation:
V1 represents the volume before the change occurs, and T1 represents the temperature before a change occurs. As guessed, V2 represents the volume after a change occurs, and T2 represents the temperature after a change occurs.
***This formula only works if the temperature is in degrees Kelvin.
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