Particle - Wikipedia
In the physical sciences, a particle (or corpuscule in older texts) is a small localized object which can be described by several physical or chemical properties, such as volume, density, or mass. [1][2] They vary greatly in size or quantity, from subatomic particles like the electron, to microscopic particles like atoms and molecules, to macros...
What is the arrangement of particles in a solid, liquid and gas?
In a solid, the particles pack together tightly in a neat and ordered arrangement. The particles are held together too strongly to allow much movement but the particles do vibrate.
What Is a Particle? - Quanta Magazine
2020年11月12日 · Namely, particles are representations of the Poincaré group: the group of 10 ways of moving around in the space-time continuum. Objects can shift in three spatial directions or shift in time; they can also rotate in three directions or receive a …
Elementary particle - Wikipedia
In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. [1] The Standard Model presently recognizes seventeen distinct particles—twelve fermions and five bosons.
A New Map of All the Particles and Forces | Quanta Magazine
2020年10月22日 · We’ve created a new way to explore the fundamental constituents of the universe. [Editor’s note: The full, interactive map is available below.] All of nature springs from a handful of components — the fundamental particles — …
Subatomic particle | Definition, Examples, & Classes | Britannica
2024年11月10日 · Subatomic particle, any of various self-contained units of matter or energy that are the fundamental constituents of all matter. They include electrons, protons, neutrons, quarks, muons, and neutrinos, as well as antimatter particles such as positrons.
List of particles - Wikipedia
Molecules are the smallest particles into which a substance can be divided while maintaining the chemical properties of the substance. Each type of molecule corresponds to a specific chemical substance .
Matter | Definition, Characteristics, States, Examples, & Facts ...
2024年10月2日 · Matter, material substance that constitutes the observable universe and, together with energy, forms the basis of all objective phenomena. At the most fundamental level, matter is composed of elementary particles known as quarks and leptons (the class of elementary particles that includes electrons).
11.2: Introduction to Particle Physics - Physics LibreTexts
Describe the four fundamental forces and what particles participate in them; Identify and describe fermions and bosons; Identify and describe the quark and lepton families; Distinguish between particles and antiparticles, and describe their interactions
What Are Elementary Particles? - Live Science
2022年9月20日 · Elementary particles are the smallest known building blocks of the universe. They are thought to have no internal structure, meaning that researchers think about them as zero-dimensional points...