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Monday, October 13, 2008

Mysterious Atomos


The idea of atoms as the smallest particle always amazes and arouses the interest of the philosophers and scientists of all ages. The first idea of atoms came from Leucippus, a Greek philosopher, and Democritus, his student. They first called atoms atomos. Years later, an English scientist named John Dalton began the modern atomic theory. The first atomic model was characterized by Joseph John Thomson. His model was called Plum Pudding Model because of it's similarity to a plum pudding. After Thomson came Ernest Rutherford, a New Zealander. He experimented a thin gold foil with a stream of alpha particles and came up with the idea of the nucleus. He called his model the Nuclear Model. In 1912-1913, a Danish Physicist called Niels Bohr came up with a new atomic model called the Planetary Model. It was called so because he picturized the electrons as planets revolving around the nucleus. The latest model was characterized by Erwin Schrodinger. He called his model the Electron Cloud Model. Because of these models, people had had idea of what atoms are. But until now, no one really is very sure of what atoms looked exactly in reality.

Among all these confusing models, what I believed to be the real appearance of an atom is the model of Rutherford. As you can observe, he made a model out of an experiment, not in a hypothesis. In his experiment, he noticed that most of the alpha particles just passed straight through the foil. This shows that most of the atom is empty space. He also noticed that only a few alpha particles were deflected. This means that the nucleus is very small. The other models show that the nucleus is big. This means that Rutherford described the atom as he observed, not pictured.

As shown in the above statements, one can conclude that I am quite rude in criticizing others works. But what can I do, that's what I am and that's what I noticed when I first encountered these models. I don't ask you to believe in what I already believed. I only wanted to express what is inside me. You, which of these models do you think is the true appearance of atoms?

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