He served as president of the Kaiser Wilhelm Society (1930–1937), which was renamed the Max Planck Society in 1948.

His legacy is carried on by numerous research institutions bearing his name, and his work paved the way for Einstein, Bohr, and Schrödinger to develop modern quantum mechanics. If you'd like more detail, I can explain: and its role in modern technology. Planck Units (fundamental units of measurement). Max Planck Institutes and their research areas today. Which of these

): He introduced this fundamental constant of nature, which has a value of approximately , to define the relationship between energy and frequency.

While attempting to solve the "ultraviolet catastrophe" (the failure of classical physics to predict black-body radiation at high frequencies), Planck proposed that energy oscillators in a cavity could only change energy in discrete increments ( ), not continuously. Planck’s Constant (