When was the French mathematician born who established Pascal's law?
Pascal's law: Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure) is a principle in fluid mechanics that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. Pascal's law:  The law was established by French mathematician Blaise Pascal in 1647–48. Blaise Pascal: Blaise Pascal ( ; ] ; 19 June 1623 – 19 August 1662) was a French mathematician, physicist, inventor, writer and Catholic theologian.
19 June 1623