Crystallography
Crystallography is the science of crystals: how their atoms are arranged in orderly, repeating patterns, and how that hidden order gives crystals…
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The Kinetic Theory of Gases
The kinetic theory of gases explains the behaviour of gases as the result of countless tiny particles, atoms and molecules, in constant, rapid,…
Acoustics: The Science of Sound
Acoustics is the branch of physics that studies sound: how it is produced, how it travels as waves, and how it is heard. It bridges science and art,…
Aerodynamics: How Flight Works
Aerodynamics is the study of how air flows around objects and the forces this creates. It is the science that explains how aircraft fly, how cars and…
Optics
Optics is the branch of physics that studies light: how it travels, how it interacts with matter, and how it can be controlled with lenses and…
Quantum Mechanics
Quantum mechanics is the branch of physics that describes the behaviour of matter and energy at the smallest scales, those of atoms and subatomic…
The Greenhouse Effect
The greenhouse effect is the process by which certain gases in a planet's atmosphere trap heat, keeping the surface warmer than it would otherwise…
Thermodynamics
Thermodynamics is the branch of physics concerned with heat, energy, and work, and how they transform from one form to another. Its laws are among…
Electromagnetism
Electromagnetism is the branch of physics that describes the forces between electric charges and the deep connection between electricity and…
Atomic Theory
Atomic theory is the idea that all matter is made up of tiny particles called atoms. It is one of the most important and successful ideas in all of…
String Theory
String theory is a theoretical framework that attempts to unify all the forces and particles of nature, including gravity, into a single description.…
Dark Matter: The Leading Theoretical Framework for Missing Mass in the Universe
Dark matter is the leading theoretical framework proposed to explain gravitational effects observed in galaxies and galaxy clusters that cannot be…
Special Relativity
Special relativity is the theory of space and time that Albert Einstein published in 1905. It revolutionized physics by showing that measurements of…
Chaos Theory
Chaos theory is the branch of mathematics that studies systems whose behaviour is exquisitely sensitive to their starting conditions. Such systems…
General Relativity
General relativity is Albert Einstein's theory of gravity, published in 1915. It reimagines gravity not as a force pulling objects together but as…