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4. Electrons
At this point we have noticed that tennis balls and waves (both waves on water and light waves) behave in a very different way when they are made to undergo the two slit experiment. In case we had any doubt, we now have available a method enabling us to understand whether “something” is a wave or a particle. If, when undergoing the two slit experiment, the “thing” produces two strings, we are induced to consider it a particle, if it produces interference fringes, to consider it a wave. At this point let us specify the object we are interested in: the electron. If anybody wants to have informations on the discovery of the electron and on how a number of theories concerning it came about, please take a look at the historical cronology and at the links therein contained.
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