I thought this particular functional relationship between pressure and temperature at constant volume (for an "ideal" gas) was Gay-Lussac's Law. Not that there's anything wrong with that.
First Boyle studied absolute pressure vs. volume at a constant
temperature, in the 1660s.
Then Guiles Amontons in about 1700-1702 studied absolute pressure vs. absolute temperature at a constant
volume. Gay-Lussac actually discovered pretty much the same thing, 100 years later, and unfortunately got WAY more credit than Amontons. Maybe it is because Gay-Lussac was able to show that it works with all common gases, such as oxygen, nitrogen, and hydrogen, while Amontons focused just on air. I'm a rebel and so I call the relationship of absolute pressure and absolute temperature at a constant volume "Amontons' law" instead of Gay-Lussac's law.
Gay-Lussac also described the third combo, temperature vs. volume at a constant
pressure. For this part, Gay-Lussac credited the unpublished work of Charles, thus the temp-volume law became widely known as Charles's law.
pressure-volume = Boyle
temp-volume = Charles
temp-pressure = Gay-Lussac (but really Amontons)
Gay-Lussac's (aka Amontons') law, Charles's Law, Boyle's law, and Avogadro's Law (relating P, V, and T to the actual number of atoms that are present) are all captured in the ideal gas law. Benoît Paul Émile Clapeyron, a founding father of thermodynamics, in 1834 gets the credit for mashing them all together into the ideal gas law, PV=nRT.
bottom line: Since footballs are assumed to be constant volume, and they contain air, the physical chemistry of the footballs in the AFCCG was pretty much nailed by Guiles Amontons in 1700-1702.
Thus we can say that the NFL is about 315 years behind.
/takes off my history of science cap