Ludwig Prandtl was a German physicist and engineer, born on February 4, 1875, and known as the father of modern fluid mechanics. He made significant contributions to the understanding of aerodynamics and hydrodynamics, particularly through his development of the boundary layer theory, which describes how fluid flows over surfaces. Prandtl's work laid the foundation for many advancements in aerospace engineering and mechanical engineering. He also played a key role in establishing the Institute of Fluid Mechanics at the University of Göttingen, where he influenced many students and researchers in the field until his death on August 15, 1953.