Feb 15, 1564
Otto Von Guericke
Christiaan HuygensChristiaan Huygens
Birth:14 April 1629
Death: 8 July 1695
He also made important contributions to mechanics, stating that in a collision between bodies, neither loses nor gains "motion'' (his term for momentum) Matter in motion made up the universe. He studied elastic collisions in the 1650s but delayed publication for over a decade.
31 years old
65 years old
he discovered one of Saturn's moons—later named Titan
John DaltonJohn Dalton
6 September 1766 – 27 July 1844
Dalton’s atomic model is one of the fundamentals of physics and chemistry. This theory of atomic composition was hypothesized and partially confirmed by the English chemist and Physicist John Dalton. He discovered that certain gases only could be combined in certain proportions even if two different compounds shared the same common element or group of elements.
78 yrs old
John Dalton and his brother were born color-blind.
Lorenzo Romano Amedeo Carlo Avogadro di Quaregna e di CerretoLorenzo Romano Amedeo Carlo Avogadro di Quaregna e di Cerreto
9 August 1776, Turin, Piedmont – 9 July 1856
He is most noted for his contributions to molecular theory, including what is known as Avogadro's law.vogadro's law is an experimental gas law relating volume of a gas to the amount of substance of gas present.
35 years old
Avogadro was honored to appear on an Italian Stamp.