What does antimatter mean?

Definitions for antimatter
ˈæn tiˌmæt ər, ˈæn taɪ-an·ti·mat·ter

This dictionary definitions page includes all the possible meanings, example usage and translations of the word antimatter.

Princeton's WordNet

  1. antimatternoun

    matter consisting of elementary particles that are the antiparticles of those making up normal substances

GCIDE

  1. antimatternoun

    Matter whch is composed of antiparticles such as antiprotons, positrons, and antineutrons.

Wiktionary

  1. antimatternoun

    Matter that is composed of the antiparticles of those that constitute normal matter.

  2. antimatternoun

    A form of matter that has a key property, such as charge, opposite to that of ordinary matter.

Wikipedia

  1. Antimatter

    In modern physics, antimatter is defined as matter composed of the antiparticles (or "partners") of the corresponding particles in "ordinary" matter. Antimatter occurs in natural processes like cosmic ray collisions and some types of radioactive decay, but only a tiny fraction of these have successfully been bound together in experiments to form antiatoms. Minuscule numbers of antiparticles can be generated at particle accelerators; however, total artificial production has been only a few nanograms. No macroscopic amount of antimatter has ever been assembled due to the extreme cost and difficulty of production and handling. In theory, a particle and its antiparticle (for example, a proton and an antiproton) have the same mass, but opposite electric charge, and other differences in quantum numbers. A collision between any particle and its anti-particle partner leads to their mutual annihilation, giving rise to various proportions of intense photons (gamma rays), neutrinos, and sometimes less-massive particle–antiparticle pairs. The majority of the total energy of annihilation emerges in the form of ionizing radiation. If surrounding matter is present, the energy content of this radiation will be absorbed and converted into other forms of energy, such as heat or light. The amount of energy released is usually proportional to the total mass of the collided matter and antimatter, in accordance with the notable mass–energy equivalence equation, E=mc2.Antiparticles bind with each other to form antimatter, just as ordinary particles bind to form normal matter. For example, a positron (the antiparticle of the electron) and an antiproton (the antiparticle of the proton) can form an antihydrogen atom. The nuclei of antihelium have been artificially produced, albeit with difficulty, and are the most complex anti-nuclei so far observed. Physical principles indicate that complex antimatter atomic nuclei are possible, as well as anti-atoms corresponding to the known chemical elements. There is strong evidence that the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. The process by which this inequality between matter and antimatter particles developed is called baryogenesis.

ChatGPT

  1. antimatter

    Antimatter is a form of matter composed of antiparticles, which have the same mass as particles of ordinary matter but opposite charge and other properties such as spin and quantum number. When antimatter comes into contact with regular matter, they both annihilate - convert into energy. This property makes it a subject of much research and speculation in the field of physics.

Wikidata

  1. Antimatter

    In particle physics, antimatter is material composed of antiparticles, which have the same mass as particles of ordinary matter but have opposite charge and quantum spin. Antiparticles bind with each other to form antimatter in the same way that normal particles bind to form normal matter. For example, a positron and an antiproton can form an antihydrogen atom. Furthermore, mixing matter and antimatter can lead to the annihilation of both, in the same way that mixing antiparticles and particles does, thus giving rise to high-energy photons or other particle–antiparticle pairs. The end result of antimatter meeting matter is a release of energy proportional to the mass as the mass-energy equivalence equation, E=mc² shows. There is considerable speculation as to why the observable universe is apparently composed almost entirely of matter, whether there exist other places that are almost entirely composed of antimatter instead, and what sorts of technology might be possible if antimatter could be harnessed. At this time, the apparent asymmetry of matter and antimatter in the visible universe is one of the greatest unsolved problems in physics. The process by which this asymmetry between particles and antiparticles developed is called baryogenesis.

Suggested Resources

  1. antimatter

    Song lyrics by antimatter -- Explore a large variety of song lyrics performed by antimatter on the Lyrics.com website.

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Numerology

  1. Chaldean Numerology

    The numerical value of antimatter in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of antimatter in Pythagorean Numerology is: 4

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"antimatter." Definitions.net. STANDS4 LLC, 2024. Web. 28 Mar. 2024. <https://www.definitions.net/definition/antimatter>.

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