-
Democritus was an Ancient Greek pre Socratic philosopher he discovered atoms! -
In May 1932, James Chadwick discovered the neutron. -
Antoine Laurent de Lavoisier was a French chemist who was central to the 18th-century chemical revolution. He discovered oxygen and silicon. -
The Alchemist believed that every metal was formed by two principles, Mercury and sulfur. -
John dalton had an atomic theory that all matter was comprised of indivisible and indestructible atoms. In 1808 John Dalton published his first chemical atomic theory. -
Newland's law of octaves was made by the chemist J.A.R. Newland’s in 1864 where he arranged the elements -
In 1869, Russian chemist Dmitri Mendeleev created the original periodic table but left gaps for the elements that were not yet discovered -
The photoelectric effect is used to generate electricity with the help of solar panels. This was discovered by the physicist Heinrich Rudolf Hertz in 1887 -
In March 1, 1896 a man named Henri Becquerel discovered radioactivity. The first radioactive element to be discovered was uranium. Radioactivity is an unstable atomic nucleus. -
Electrons were discovered by English physicist J.J Thomson in 1897. -
Electron carries a negative charge -
A Plum Pudding model is a scientific model of an atom it’s defined by electrons. Negative charged “plums” embedded in positive charged “pudding”. The Plum Pudding model was discovered by J.J Thomsom’s in 1904. -
The theory was that light bulbs should be heated to a temperature of about 3,200 Kelvin to ensure that most of energy is emitted as visible waves. This was discovered by Max Planck in 1905. -
Rutherford’s gold foil experiment is a piece of gold foil that is hit with a alpha particle. Founded in 1911 by Ernest Rutherford. -
The Bohr’s Planetary is a structural model of an atom. By Niels Bohr in 1913 -
Moseley published a paper in 1914 that he included that an atomic number is a number with positive charges in the atomic nucleus. -
A proton is a Positively charged particle. Founded in 1917 by Ernest Rutherford -
Millikan was honored with the noble prize for physics in 1923. He won for the measurement of the elementary electric charge and for his work on the photoelectric effect. -
This equation is a linear partial differential equation that governs the wave function of a quantum mechanical system. Founded by physicist Erwin Schrodinger in 1926. -
The Heisenburg Uncertainty Principle was made by Werner Heisenburg in 1927. It’s a variety of mathematical equations with a limit to the accuracy