Euler was blind in his right eye at the age of 28 and completely blind at the age of 60. He was versatile. With his extensive attainments in mathematics, mechanics and maritime architecture, he was rated as the most prolific mathematician in European history, and it is no exaggeration to call18th century the Euler century.
e^iπ+ 1=0。 This identity, called Euler Formula, was first discovered by Swiss mathematician leonhard euler in 1740. Its magic lies in that it combines the five most basic constants in mathematics in a very beautiful form: e- natural logarithm, representing nature; π-pi stands for infinity; I-imagination unit, representing imagination; 1-the number one represents the starting point; 0- The number zero represents the end point. Multiplication stands for combination, exponent stands for addition, addition stands for accumulation, and equal sign stands for unit. Euler's formula implies that nature is full of infinite imagination, but it will eventually come to an end.
Euler's intrinsic purity, like this Euler formula, also communicates almost all mathematical elements in the world in the most concise way. Irrational number e, which is the base of natural logarithm, is hidden in the speed of spacecraft and the spiral of snail. After Euler, imaginary number laid the theoretical foundation of quantum mechanics in the future electronic revolution.