Max Karl Ernst Ludwig Planck
1858-1947 (89 years old)
Planck is considered one of the most important figures in the field of theoretical physics. He is best known for his pioneering work in quantum theory, which led to the development of the theory of quantum mechanics.
Throughout his career, he had many collaborators. Some notable ones, and the work they contributed on, include:
Albert Einstein and the theory of the photoelectric effect, which provided evidence for the existence of quanta, or discrete packets of energy
Niels Bohr and the application of quantum mechanics to the study of atomic structure.
Erwin Schrödinger and the theory of wave mechanics.
Planck received the Nobel Prize in Physics in 1918 for his work on quantum theory - "in recognition of the services he rendered to the advancement of Physics by his discovery of energy quanta".
He died of natural causes, his death was reported to be due to kidney failure and heart problems.