Modern · Germany
Max Planck
1858-1947
Their story
Why Max Planck matters
Planck proposed that energy is exchanged in tiny packets, opening the path to quantum physics.
Max Planck worked in Germany during the Modern era. Science was becoming a team effort carried out in universities, hospitals, observatories, industry and large research laboratories.
In physics, ideas become especially powerful when a prediction can be measured or made to work in a real device. Max Planck's work joined curiosity with practical problem-solving and opened questions for the next generation.
Key discovery or invention
The quantum idea.
Max Planck's central contribution was the quantum idea.
The key idea linked a physical effect with something that could be predicted, measured or engineered. That bridge between explanation and practical result is why the work became useful beyond the original experiment.
Why it still matters: Later technologies could develop because engineers and scientists had a stronger explanation of the underlying physical effect. Max Planck's work is one chapter in that continuing story rather than the final word.
The Planck constant links the energy of a quantum to its frequency.