Grand Unified Theory
A Grand Unified Theory is a hypothesized framework that would merge three of the fundamental forces of nature, the electromagnetic, weak, and strong…
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A Grand Unified Theory is a hypothesized framework that would merge three of the fundamental forces of nature, the electromagnetic, weak, and strong…
Crystallography is the science of crystals: how their atoms are arranged in orderly, repeating patterns, and how that hidden order gives crystals…
The kinetic theory of gases explains the behaviour of gases as the result of countless tiny particles, atoms and molecules, in constant, rapid,…
The caloric theory was an explanation of heat, widely accepted into the early nineteenth century, which held that heat is an invisible, weightless…
The Coriolis effect is the apparent deflection of moving objects, such as air and water, when viewed from a rotating frame like the spinning Earth.…
The Doppler effect is the change in the observed frequency of a wave when its source and the observer move relative to each other. It is why the…
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 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…
Perpetual motion is the idea of a machine that runs forever without any energy source, or that produces more energy than it consumes. Inventors have…
Newton's laws of motion are three principles, set out by Isaac Newton in 1687, that describe how objects move under the action of forces. For more…
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 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 is the process by which certain gases in a planet's atmosphere trap heat, keeping the surface warmer than it would otherwise…
The conservation of mass is the principle that, in any ordinary physical or chemical change, matter is neither created nor destroyed. The total mass…
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 is the branch of physics that describes the forces between electric charges and the deep connection between electricity and…
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 is a theoretical framework that attempts to unify all the forces and particles of nature, including gravity, into a single description.…
The northern lights, known scientifically as the aurora borealis, are one of nature's most spectacular displays. Shimmering curtains of green, pink,…
The 1989 Fleischmann-Pons announcement claimed that palladium electrodes immersed in heavy water produced excess heat consistent with…