August Kekulé had been struggling to figure out how the atoms in benzene are arranged. While thinking about the problem, he dozed off to sleep. In his dream, he saw atoms dancing. Gradually the atoms arranged themselves in a long row and started moving about like a snake. As he watched the snake dance, it turned around a bit its own tail. When Kekulé woke up, he immediately realized the meaning of his dream. Benzene molecules are made up of rings of carbon atoms. There are many such stories wherein inventors, in their dream state, were presented with the most critical missing link of the
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