Pascal's barrel discoverer or inventor Blaise Pascal
Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure) is a principle in fluid mechanics given by Blaise Pascal that states that a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. The law was established by French mathematician Blaise Pascal in 1653 and published in 1663.Pascal's barrel
Pascal's barrel is the name of a hydrostatics experiment allegedly performed by Blaise Pascal in 1646.  In the experiment, Pascal supposedly inserted a long  vertical tube into a barrel filled with water.  When water was poured into the vertical tube, the increase in hydrostatic pressure caused the barrel to burst.The experiment is mentioned nowhere in Pascal's preserved works and it may be apocryphal, attributed to him by 19th-century French authors, among whom the experiment is known as crève-tonneau (approx.: "barrel-buster"); 
nevertheless the experiment remains associated with Pascal in many elementary physics textbooks.
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