Democritus-442 BC- Was a Greek philosopher, who developed the atomic theory of the universe. This theory projected the current principles of the protection of energy and the indestructibility of matter. Aristotle-384-322 BC-Aristotle provided knowledge of natural science including Physics, which gives a huge amount of information on astronomy, meteorology, plants, and animals. Lavoisier-1777- A French chemist, who is considered the founder of modern chemistry. He explained the concept of an element as a simple substance that could not be broken down by any acknowledged technique of chemical analysis, and he developed a theory of the formation of chemical compounds from elements. John Dalton-1803-A British chemist and physicist, who contributed to science his theory that matter is composed of atoms of different weights and join in simple shares by weight. Crookes-1870's- He constructed this ancestor of the modern television image tube to investigate the properties of cath (more)

Democritus-442 BC- Was a Greek philosopher, who developed the atomic theory of the universe. This theory projected the current principles of the protection of energy and the indestructibility of matter. Aristotle-384-322 BC-Aristotle provided knowledge of natural science including Physics, which gives a huge amount of information on astronomy, meteorology, plants, and animals. Lavoisier-1777- A French chemist, who is considered the founder of modern chemistry. He explained the concept of an element as a simple substance that could not be broken down by any acknowledged technique of chemical analysis, and he developed a theory of the formation of chemical compounds from elements. John Dalton-1803-A British chemist and physicist, who contributed to science his theory that matter is composed of atoms of different weights and join in simple shares by weight. Crookes-1870's- He constructed this ancestor of the modern television image tube to investigate the properties of cathode rays. J.J. Thomson-1898-J.J Thomson was the first to discover the electron. Robert Millikan-1908-1917-American physicist, best known for his work in atomic physics and major science, the forces they exert on one another, and the results produced by these forces. Ernest Rutherford-1909-1911-British physicist worked in nuclear physics and made the theory of the structure of the atom. Neils Bohr-1913---Bohr made numerous contributions to our understanding of atomic structure and quantum mechanics. (less)