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They developed the whole theory that metals come together as of mercury and sulfur and that it is possible to change base metals into gold. -
Greek philosopher, who developed the atomic theory of the universe, His atomic theory anticipated the modern principles of the conservation of energy and the irreducibility of matter. -
He found that there are only five solid shapes whose sides are made from regular polygons (triangles, squares, pentagons, hexagons, etc) -
Aristotle provided us with knowledge of natural science including Physics, which gives a vast amount of information on astronomy, meteorology, plants, and animals. -
discovered that the volume of a gas decreases with increasing pressure and vice versa -
French chemist, who is considered the founder of modern chemistry. Lavoisier clarified the concept of an element as a simple substance that could not be broken down by any known method of chemical analysis, and he devised a theory of the formation of chemical compounds from elements. -
British chemist and physicist, who developed the atomic theory upon which modern physical science is founded. Dalton's most important contribution to science was his theory that matter is composed of atoms of differing weights and combine in simple ratios by weight. -
Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table. -
Pierre Curie and his wife Marie Curie stated that radioactive materials cause atoms to break down spontaneously, releasing radiation in the form of energy and subatomic particles. -
J.J Thomson was the first to discover the electron. -
In 1900 Planck stated that energy is radiated in small, discrete units, which he called quanta. -
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material.
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Einstein was known as the creator of the special and general theories of relativity and for his intelligent hypothesis concerning the particle nature of light. -
British physicist, who became a Nobel laureate for his pioneering work in nuclear physics and for his theory of the structure of the atom.
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He was a British physicist James Chadwick measured the energy of the protons. -
he discovered a systematic relation between wave- length and atomic number. This discovery is now known as Moseley's Law. -
American physicist, best known for his work in atomic physics and major science, dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces. -
the uncertainty principle, which states that the position and the momentum of an object cannot both be known exactly. -
Schroedinger explained movement of an electron in an atom as a wave. -
British physicist James Chadwick measured the energy of the protons