Italian Jesuit Evangelista Torricelli was able to definitely prove that the atmosphere has a specific weight by designing an experiment in which a tube is filled with mercury and then placed into a dish of mercury. Torricelli found that half of the mercury runs down into the dish and the other half stays within the tubing. Until this point it was believed impossible to create a negative or empty space as the Greek philosopher Aristotle once stated, “nature abhors a vacuum” believing that nature ...
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