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One of two most important philosiphers of ancient science.
His writings on logic, metaphysics, ethics and political philosophy, shaped the entire history of Western philosophy. -
If it werent for Democritus, there would be no modern atomic theory. Democritus believed that the atoms would fit together like velcro, they could only break apart at the seams
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Discovered the role oxygen plays in combustion. He recognized and named oxygen and hydrogen.
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Published his Law of Defenite Proportions. Law states that a compound is composed of exact proportions of elements by mass.
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1) All matter is made of atoms. Atoms are indivisible and indestructible. 2) All atoms of a given element are identical in mass and properties 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.
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Ernest Rutherford is best known as a central figure in the study of radioactivity and a leader in the exploration of nuclear physics.
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Discovered electromagnetic induction. These experiments form the basis of modern electromagnetic technology.
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Robert Milkan is best known for his work on the photoelectric effect and measuring the charge of the electron.
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Bohrs theory was the discovery of electrons and radioactivity that led to different models of the stucture of the atom.
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Discovered groundbreaking wave equation for electron movements. Awarded 1933 nobel prize in physics.
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Ideas were a basis for developing the wave mechanics theory. This theory has greatly improved knowledge on the physical nature of the atomic scale.
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Known for their pioneering work in the study of radioactivity. Led to their dicovery of the elements radium and polonium.
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Used natural fluorescent minerals to study the properties of x-rays.
Proved that the uranium emitted radiation without an external source of energy such as the sun. Becquerel had discovered radioactivity. -
discovered the electron. Thomson discovered the electrons and it was proved that atoms were made up of protons, electrons and neutrons.
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Discovered the equation E=Nhf, with E=energy, N=integer, h=constant, f=frequency.
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introduces general theory of relativity. Regarded as the most remarkable scientific contribution of the 20th century.
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Proved neutron theory. Studied the beryllium radiation with an ionisation counter and a cloud chamber.
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Discovered the element that makes atomic bombs explode. Awarded nobel prize beofre the age of 40.
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Worked by side of Otto Hahn. Gave the first theoretical explanation of the fission process.
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German chemist. Discovered nuclear fussion.
