Scientists / Physics
マックス・プランク
DE 1858-04-23 ~ 1947-10-04
German theoretical physicist of the late nineteenth and early twentieth centuries
Introduced the energy quantum hypothesis, founding quantum theory
A conservative physicist who reluctantly broke through the limits of classical physics and opened a new era
German physicist born in 1858 who introduced the energy quantum, launching quantum theory. Won the 1918 Nobel Prize. Planck's constant h underpins all of quantum mechanics.
What You Can Learn
Planck's insight that new truths prevail when a new generation adopts them speaks directly to change management: cultivating advocates among younger staff may outperform persuading entrenched skeptics. His own example shows innovation can emerge from steady, rigorous work rather than disruptive personalities. And the fact that the obscure black-body problem reshaped all of physics underlines the long-term value of tackling fundamental questions.
Words That Resonate
A new scientific truth does not triumph by convincing its opponents, but rather because its opponents eventually die and a new generation grows up familiar with it.
Eine neue wissenschaftliche Wahrheit pflegt sich nicht in der Weise durchzusetzen, dass ihre Gegner uberzeugt werden und sich als belehrt erklaren, sondern vielmehr dadurch, dass ihre Gegner allmahlich aussterben und dass die heranwachsende Generation von vornherein mit der Wahrheit vertraut gemacht ist.
Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are a part of the mystery that we are trying to solve.
An experiment is a question which science poses to Nature, and a measurement is the recording of Nature's answer.
Life & Legacy
Max Planck is the reluctant revolutionary of modern physics. A conservative thermodynamicist by temperament, he introduced the energy quantum to solve the black-body radiation problem, setting off a chain of discoveries that would overturn classical physics entirely.
Born in 1858 in Kiel to a family of jurists, Planck studied physics at Munich despite a professor's warning that the field had little left to discover. He specialized in thermodynamics, earned his doctorate in 1879 on the second law, and later studied under Helmholtz and Kirchhoff in Berlin.
Appointed professor in Berlin in 1889, he took up Kirchhoff's unsolved black-body problem. Wien's law fit short wavelengths; Rayleigh-Jeans fit long ones; no theory covered the full spectrum. On 14 December 1900 Planck proposed that energy is emitted and absorbed in discrete packets proportional to frequency: E = hv. The constant h, now called Planck's constant, became a foundation stone of physics.
Planck himself regarded the quantum as a mathematical convenience, not a physical reality. It was Einstein's 1905 light-quantum hypothesis and Bohr's 1913 atomic model that established the quantum as real, leading to the full quantum mechanics of the 1920s. Planck received the 1918 Nobel Prize as the acknowledged founder of quantum theory.
As president of the Kaiser Wilhelm Society (later the Max Planck Society), he shaped German science policy. Under the Nazi regime he avoided open defiance but tried to protect Jewish colleagues. His son Erwin was executed in 1945 for involvement in the plot to assassinate Hitler.
Planck endured immense personal loss through two world wars yet maintained his commitment to science until his death in Gottingen in 1947. The Max Planck Society that bears his name remains Germany's premier basic-research institution.
Expert Perspective
Among scientists, Planck stands at the boundary between classical and quantum physics. A thermodynamics specialist who reluctantly introduced the quantum, he embodies the way scientific revolutions can arise unintentionally. While Einstein and Bohr extended the quantum concept, Planck himself remained cautious about its implications, a caution that itself illustrates the difficulty of the classical-to-quantum transition.