Deep Dives
Long-form articles on the ideas that don't fit in a module. The mysteries that haven't been solved. The history of how we figured it all out. The concepts that deserve more than an explanation.
Why You Can't Travel Faster Than Light
The speed limit isn't arbitrary. It isn't a technological barrier. It's a fundamental feature of causality itself — and understanding why requires rethinking what time and space actually are.
Read article →The Measurement Problem — Physics' Open Wound
Quantum mechanics predicts experimental results with extraordinary precision. It also has a foundational crisis that has never been resolved. What actually happens when you observe something?
Read article →Maxwell's Demon and the Physics of Information
A thought experiment from 1867 that took a century to fully resolve. Why erasing a single bit of information necessarily generates heat — and what that tells us about the nature of entropy.
Read article →The Unreasonable Effectiveness of Mathematics
Abstract mathematics invented with no physical application in mind keeps turning out to describe reality with uncanny precision. Why? Nobody knows — and the question goes deeper than it first appears.
Read article →How We Know What Stars Are Made Of
In 1835, Auguste Comte declared the chemical composition of stars permanently unknowable. Thirty years later, spectroscopy proved him wrong — and gave us a way to read the entire universe.
Read article →The Four Fundamental Forces — and the Dream of One
Gravity, electromagnetism, the strong force, the weak force. They're wildly different in strength, range, and behavior. For 60 years, physicists have been trying to show they're all the same thing.
Read article →Symmetry — the Hidden Engine of Physics
Every conservation law in physics — energy, momentum, charge — is a consequence of a symmetry. This is Noether's theorem, and it may be the deepest result in all of theoretical physics.
Read article →The Problem of Quantum Gravity
General relativity and quantum mechanics are the two most successful theories in physics. They are also mathematically incompatible. This is the biggest open problem in fundamental physics — and the attempts to solve it are extraordinary.
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