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Sep 20, 2022 · One of these philosophers was Democritus (~460-370 B.C.E.), often referred to as the "laughing philosopher" because of his emphasis on cheerfulness. He taught that there were substances called atoms and that these atoms made up all material things. The atoms were unchangeable, indestructible, and always existed. Figure 4.1.3 4.1. 3: Democritus.
Aristotle did not believe in the atomic theory and he taught so otherwise. He thought that all materials on Earth were not made of atoms, but of the four elements, Earth, Fire, Water, and Air. He believed all substances were made of small amounts of these four elements of matter. Most people followed Aristotle’s idea, causing Democritus ...
Sep 20, 2022 · One of these philosophers was Democritus (~460-370 B.C.E.), often referred to as the "laughing philosopher" because of his emphasis on cheerfulness. He taught that there were substances called atoms and that these atoms made up all material things. The atoms were unchangeable, indestructible, and always existed. Figure 4.1.3 4.1. 3: Democritus.
This weakness, in fact, was precisely one of the reasons why Aristotle rejected the atomism of Democritus—namely, that the latter had postulated atoms that were not subject to change. For Aristotle the very essence of matter was its being subject to change; hence to him the concept of immutable atoms was a contradiction in terms.
Aristotle did not believe in the existence of atoms as we know them today. Instead, he believed that matter was endlessly divisible and that it could be broken down into smaller and smaller pieces. This idea of endless divisibility was a key component of alchemy, an ideology that Aristotle introduced.
Summary. Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. Dalton based his theory on the law of conservation of mass and the law of constant composition. The first part of his theory states that all matter is made of atoms, which are indivisible.
Apr 4, 2024 · Democritus (born c. 460 bce —died c. 370) was an ancient Greek philosopher, a central figure in the development of philosophical atomism and of the atomic theory of the universe. Knowledge of Democritus’s life is largely limited to untrustworthy tradition. It seems that he was a wealthy citizen of Abdera, in Thrace; that he traveled widely ...
