The Equations That Define Physics
From Newton's laws to the frontiers of neutrinovoltaic technology — the 16 most important formulas in physics, explained.
Newton's Second Law
The fundamental relationship between force, mass, and acceleration.
Law of Universal Gravitation
The force of gravity between two masses.
Boltzmann Entropy
The bridge between microscopic states and macroscopic thermodynamics.
Maxwell's Equations
The four equations that unify electricity, magnetism, and light.
Mass–Energy Equivalence
The most famous equation in physics — energy equals mass times the speed of light squared.
Einstein Field Equations
How matter and energy curve spacetime — the foundation of general relativity.
Planck–Einstein Relation
Energy is quantized — the birth of quantum mechanics.
Schrödinger Equation
The fundamental equation governing quantum systems.
Heisenberg Uncertainty Principle
The fundamental limit of precision in quantum measurements.
Dirac Equation
Unifying quantum mechanics and special relativity — predicting antimatter.
Standard Model Lagrangian
The complete mathematical description of all known fundamental particles and forces.
Radioactive Decay Law
The exponential decay of unstable atomic nuclei.
Hubble's Law
The expansion of the universe — galaxies recede proportionally to their distance.
Friedmann Equations
The equations governing the expansion of the universe from general relativity.
Hawking Radiation Temperature
Black holes emit thermal radiation — connecting gravity, quantum mechanics, and thermodynamics.
Schubart–NEG Master Equation
The master equation for neutrinovoltaic energy conversion — turning invisible radiation into electrical power.