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Essay / Atomic Theory - 1353
When people think of comparison and resemblance, they quickly jump to immediate observations and obvious detections. They fail to perceive the most imperative and subtle attributes. Whether everyone knows it or not, everything that inhabits the world and even the universe is similar in at least one way. All of these substances contain matter. Matter is the physical substance that encompasses everything from dusty nebulae to the food on our plate. It can be described as anything that has mass and takes up space. Within this matter are infinitesimal particles called atoms. So far, they constitute what scientists believe to be the smallest part of everything and can even be synthesized in the laboratory (Oxlade 7.). The knowledge scientists have about atoms is enormous, unlike their microscopic size. In fact, modern scientists would not have even gained this knowledge if earlier chemists and physicists had not revealed what was covered. They opened the way to a vast expansion of consciousness and made it possible to see the atom in its true form. However, these impeccable discoveries are not the result of a single human being, but rather a timeline of chance events. The idea that substances contain matter did not come out of nowhere. Ancient Greek philosophers attempted to prove the existence of matter which began with the fact that everything was made of fire or water in different forms. Around 460 BC, a philosopher named Democritus described the smallest piece of matter as indivisible. This gave rise to the name “atomos” or Greek for “no-cut”. Unfortunately, the most influential philosopher, Aristotle, did not follow Democritus' beliefs. For him, the four elements constituted matter. These contradictory arguments surprise... the newspaper industry... a large number of school textbooks, but eventually tire of the subject. Eventually he turned to a more elaborate and interesting line of research. He decided that he was going to determine the charge of an electron (AIP). His famous “Oil Drop” experiment caught the attention of many after revealing the charge of an electron or “elementary electric charge.” Using two metal electrodes, the masses of the oil droplets could be determined by balancing the downward gravitational force with the upward thrust and electrical forces exerted on them. After repeating the tests, the charges were calculated to be exactly 1.5924 x 10-19 C. Fortunately, JJ Thomson previously used a ratio that helped Millikan conduct further research; charge to ground. With this ratio, Millikan also determined that the mass of an electron was 9.109 x 10-31 kg (KentChemistry).