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Democritus
Democritus was an Ancient Greek philoshopher born in Abdera; formulated the Atomic Theory of the Universe, and explained the hypothesis that atoms have a void or space in between the eletrons and cannot be broken no matter what. This hypothesis make other atomist to study atoms and material differently than before. -
John Dalton
He is best known for his pioneering work in the development of modern atomic theory, and his research into colour blindness heavily. He also explains the pressure of steam and other vapours at different temperatures, both in a vacuum and in air; on evaporation; and on the thermal expansion of gases. -
J.J Thomson
J.J Thomson was a British physicist. In 1897, Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, and thus is credited with the discovery and identification of the electron. -
Ernest Rutherford
Ernest Rutherford was a physicist and chemist who became known as the father of nuclear physics. He is considered the greatest experimentalist at the time.He discovered the concept of radioactive half-life, proved that radioactivity involved the transmutation of one chemical element to another, and also differentiated and named alpha and beta radiation. -
Niels Bohr
Niels Bohr was a Danish physicist who made foundational contributions to understanding atomic structure and quantum mechanics. Bohr developed the Bohr model of the atom with the atomic nucleus at the centre and electrons in orbit around it, which he compared to the planets orbiting the Sun. He helped develop quantum mechanics, in which electrons move from one energy level to another in discrete steps, instead of continuously.
