• In physics, the cross section is a measure of the probability that a specific process will take place in a collision of two particles. For example, the...
    36 KB (5,766 words) - 12:42, 17 June 2025
  • 3D Cross section (geology) Cross section (electronics) Radar cross section, measure of detectability Cross section (physics) Absorption cross section Nuclear...
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  • Thumbnail for Absorption cross section
    physics, absorption cross-section is a measure of the probability of an absorption process. More generally, the term cross-section is used in physics...
    4 KB (505 words) - 17:05, 13 February 2025
  • A gamma ray cross section is a measure of the probability that a gamma ray interacts with matter. The total cross section of gamma ray interactions is...
    20 KB (2,873 words) - 23:47, 12 June 2025
  • Photoionisation cross section in the context of condensed matter physics refers to the probability of a particle (usually an electron) being emitted from...
    2 KB (175 words) - 16:02, 28 May 2025
  • Thumbnail for Neutron cross section
    In nuclear physics, the concept of a neutron cross section is used to express the likelihood of interaction between an incident neutron and a target nucleus...
    22 KB (2,865 words) - 13:59, 1 May 2025
  • amongst neutron cross sections the absorption cross sections are of particular interest. In nuclear physics it is conventional to consider the impinging...
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  • Thumbnail for Klein–Nishina formula
    In particle physics, the Klein–Nishina formula gives the differential cross section (i.e. the "likelihood" and angular distribution) of photons scattered...
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  • Atmospheric refraction Attenuation length Attenuator (genetics) Cross section (physics) Electrical impedance Environmental remediation for natural attenuation...
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  • Thumbnail for Radar cross section
    Radar cross-section (RCS), denoted σ, also called radar signature, is a measure of how detectable an object is by radar. A larger RCS indicates that an...
    32 KB (4,304 words) - 05:00, 16 May 2025
  • Thumbnail for Thomson scattering
    _{0}mc^{2}}}\right)^{2}.} The important feature is that the cross section is independent of light frequency. The cross section is proportional by a simple numerical factor...
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  • Thumbnail for Square (algebra)
    denominator, and may be expressed with square distance in the numerator) cross section (physics), an area-dimensioned quantity kinetic energy (quadratic dependence...
    15 KB (1,990 words) - 10:11, 15 February 2025
  • Barn (unit) (redirect from Barn (physics))
    nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express...
    15 KB (1,376 words) - 00:56, 29 May 2025
  • scattering Computation of radiowave attenuation in the atmosphere Cross section (physics) Grey atmosphere High-energy X-rays Mass attenuation coefficient...
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  • R is the ratio of the hadronic cross section to the muon cross section in electron–positron collisions: R = σ ( 0 ) ( e + e − → h a d r o n s ) σ ( e...
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  • In physics, and especially scattering theory, the momentum-transfer cross section (sometimes known as the momentum-transport cross section) is an effective...
    5 KB (1,019 words) - 01:54, 3 March 2025
  • Titov, O. (2016-01-01). "The inverse beta decay: a study of cross section". Journal of Physics: Conference Series. 675 (1): 012003. Bibcode:2016JPhCS.675a2003O...
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  • Thumbnail for Tandem mass spectrometry
    quantitatively and qualitatively. Accelerator mass spectrometry Cross section (physics) Mass-analyzed ion-kinetic-energy spectrometry Unimolecular ion...
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  • Cross-phase modulation Cross-recurrence quantification Cross entropy Cross fluid Cross modulation Cross sea Cross section (physics) Crossing (physics)...
    28 KB (2,788 words) - 18:26, 23 February 2025
  • International System of Units ISO 31 Elert, Glenn. "Special Symbols". The Physics Hypertextbook. Retrieved 4 August 2021. NIST (16 August 2023). "SI Units"...
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  • S-factor (category Nuclear physics)
    In nuclear physics, the astrophysical S-factor S(E) is a rescaling of a nuclear reaction's total cross section σ(E) to account for the Coulomb repulsion...
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  • In physics, the pomeron is a Regge trajectory — a family of particles with increasing spin — postulated in 1961 to explain the slowly rising cross section...
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  • Thumbnail for Two-photon physics
    Witten, Edward (1977). "Anomalous cross section for photon-photon scattering in gauge theories". Nuclear Physics B. 120 (2). Elsevier BV: 189–202. Bibcode:1977NuPhB...
    13 KB (1,576 words) - 05:19, 9 June 2025
  • to exist in the cores of neutron stars. Neutronium is used in popular physics literature to refer to the material present in the cores of neutron stars...
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  • Thumbnail for Nuclear fusion
    Nuclear fusion (category Nuclear physics)
    forms of the cross-section can be derived through nuclear physics-based models and R-matrix theory. The Naval Research Lab's plasma physics formulary gives...
    113 KB (12,225 words) - 02:37, 28 May 2025
  • Thumbnail for Tension (physics)
    Traction (mechanics) Hydrostatic pressure Physics for Scientists and Engineers with Modern Physics, Section 5.7. Seventh Edition, Brooks/Cole Cengage...
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  • Accelerator physics is a branch of applied physics, concerned with designing, building and operating particle accelerators. As such, it can be described...
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  • or origin of a frame of reference Fiducial cross section, in particle physics experiments, a cross section for the subset of a process in which the distinctive...
    2 KB (250 words) - 11:13, 7 February 2017
  • or more physical objects in the environment cross each other's path. There are two central types of physics simulations: rigid body and soft-body simulators...
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  • Thumbnail for Jet (particle physics)
    particles produced by the hadronization of quarks and gluons in a particle physics or heavy ion experiment. Particles carrying a color charge, i.e. quarks...
    10 KB (1,392 words) - 19:16, 11 June 2025