History Of The Atom

History of Atom What ar components? Atoms are the building blocks which act up up everything in the universe except for energy. The image of atoms has antecedently been suggested since 400 BC in Greece by the man, k straightawayn as Democritus. This suggests that scientists buttocks then knew the universe of discourse of atoms, but could non excavate it. Even like a shot it is not can visually contingent even with the most advanced technology today to get out atoms. Scientists however can prove the existence of atoms through experiments. straightaway we know that atoms are made up of sub nuclear particles, a nucleus containing nucleons (positive charged protons and impersonal charged neutrons) which are negatively charged electrons particles which rescue a mass 1/2000 of a proton. But the question is how the root word of atoms refined into what we now know today. First, we must look back into 1911 where Ernest Rutherford and his two students: Hans Geiger and Ernest Marsden conducted the know experiment which leads to the planetary model of an atom. This experiment is known today as Rutherfords scattering, it gnarly shooting of import particles at a thin grand leaf, and patience.

An alpha depart cause a s percipient light flash on the screen so the experiment itself suggests how roughshod it was for both Rutherfords students because they were responsible for counting the number of flashes which appeared. The judge results were that the alpha particles would just now be deflected slightly. The reason for this was because previously in 1904, JJ Thomson , the same scientist to have discovered the electron, had proposed the plum pud idea. The at omic structure suggested by Thomson was that! electrons were floating in a sea of positive charge. However, although most alpha particles had been deflected slightly and most went straight through without deflection, 1 in 10000 had deflected safe back which puzzled Rutherford. The totally way this was possible was that the atomic structure of plum pudding was incorrect. Rutherford...If you want to get a full essay, order it on our website: OrderEssay.net

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