You have a physics class, a history-of-science paper, or an AP Physics exam coming up — and somewhere on the syllabus is Max Planck and the birth of quantum theory. The textbook gives you a formula and moves on. This guide gives you the whole story.

Planck was a classically trained German physicist who, in December 1900, introduced a single desperate mathematical trick to solve a problem no one else could crack: why heated objects glow the way they do. That trick — the idea that energy comes in discrete chunks called quanta — quietly demolished two centuries of classical physics. Planck himself spent years trying to walk it back. He couldn't. The revolution was already underway.

**TLDR: Max Planck** covers his Prussian upbringing and the professors who told him physics was a finished field, his obsession with blackbody radiation and the derivation of $E = hf$, his complicated public role through two world wars, and the devastating personal losses — including the Nazi execution of his son — that shadowed his final decades. It closes with a clear-eyed assessment of his legacy: a conservative man who, for better or worse, cracked open the modern world.

Written for high school and early-college readers, this is a history of quantum physics easy enough for a first encounter and specific enough to be useful. No padding, no filler — just the life, the science, and the context you need.

Grab your copy and walk into class knowing the story behind the equation.

• Understand what shaped Max Planck as a scientist and a person.
• Trace how he arrived at the quantum hypothesis and what it actually said.
• Follow his role in the rise of modern physics, his life under the Nazi regime, and his personal tragedies.
• Weigh the historical assessment of Planck as both a conservative classical physicist and the unintended father of quantum theory.

1. 1. A Kiel Boyhood and a Career No One Recommended
   Planck's family background, education in Munich and Berlin, and the surprising choice to enter a field his professors called finished.
2. 2. Thermodynamics, Berlin, and the Blackbody Problem
   Planck's rise through academic posts and how he became fixated on the puzzle of blackbody radiation, the loose thread that would unravel classical physics.
3. 3. December 1900: The Quantum Hypothesis
   How Planck derived his radiation law, why he introduced energy quanta as a 'desperate' mathematical trick, and what E=hf actually means.
4. 4. War, Loss, and the Weimar Years
   Planck as a public scientific figure through World War I and the Weimar Republic, his role at the Kaiser Wilhelm Society, and a cascade of family tragedies.
5. 5. Under the Swastika
   Planck's conduct during the Nazi years — his meeting with Hitler, his attempts to protect Jewish colleagues, and the execution of his son Erwin.
6. 6. Legacy: The Conservative Who Started a Revolution
   Planck's final years, the renaming of the Kaiser Wilhelm Society in his honor, and the long verdict on a man who reluctantly broke physics open.