Definition
Physics is the fundamental natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force. Its ultimate goal is to understand how the universe behaves.
Why It Matters
Physics is the “law” that cannot be broken or lobbied. Every other science and engineering discipline is just an application of physics. If your mental model of the world contradicts the laws of motion or thermodynamics, you will fail. Understanding physics is the only way to distinguish between “hard” constraints (the laws of nature) and “soft” constraints (human culture and technology), which is the first step in true innovation.
Core Concepts
- Classical Mechanics: Laws governing macroscopic objects at standard speeds (Newtonian physics).
- Quantum Mechanics: Behavior of matter and energy at the atomic and subatomic levels.
- Relativity: The relationship between space, time, and gravity, especially at high speeds or massive scales (Einstein).
- Thermodynamics: The study of heat, work, temperature, and statistical mechanics.