Avogadro graduated from school in 1796 and soon after he became interested in physics and mathematics and started teaching in 1809 and published the Avogadro’s hypothesis is 1811. Based on that l will assume he worked on his law for about 15 years

He proposed his hypothesis/law in 1811. Since he graduated from the University of Turin in 1796, its safe then to assume that it took him at least 15 years to come up with his hypothesis.

## Comments