He read about it. The idea existed long before Pascal Pierre Raymond de Montmort, just named it after Pascal after Pascal used it to solve problems of probability theory.
Blaise Pascal discovered the Pascal Principle when he invented the hydraulic press. Today, most machineries used Pascal's principle in their operations. One of these machineries is the hydraulic...
Pascal's triangle was originally devised as a means of determining binomial coefficients: when calculating (x+y)^n, Pascal's triangle is a very convenient way to find the coefficients of the result....