Newton
The 1st modern theory of inertia was theorized by sir Isaac Newton in 1687. He said inertia = mass * acceleration. Acceleration is = to motion in this instance.
Law of inertia is the part of newton's 1st law. So newton proposed it.
Adam Smith developed the theory of classical capitalism.
Francis Galton developed the theory of Eugenics
john dalton developed the atomic theory , which he published in 1803
Inertia keeps the planets moving around the Sun, rather than falling into the Sun.
The instrument that was necessary for Cell Theory to be developed is the microscope.
Albert Einstein developed the theory of relativity. He first proposed the special theory of relativity in 1905 and later developed the general theory of relativity in 1915. These theories revolutionized our understanding of space, time, and gravity.
The Geocentric Theory was developed by Greek astronomers. The theory was that celestial bodies moved around Earth in circular paths.
British scientist Charles Darwin (1809-1882) developed the theory of evolution (the theory that living organisms developed slowly over long periods of time).
The theory is called the Special Theory of Relativity.
john dalton developed the atomic theory , which he published in 1803