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词汇 Brownian motion
释义

Definition of Brownian motion in English:

Brownian motion

nounˌbraʊnɪən ˈməʊʃ(ə)nˌbraʊniən ˈmoʊʃən
mass nounPhysics
  • The erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium.

    〔物理〕布朗运动

    Example sentencesExamples
    • The voltage signal produced by the photodiode is calibrated in force units using the power spectrum of Brownian motion.
    • The amplitude of the displacements of unattached beads diminishes with a constant slope of - 2, as expected for Brownian motion in a viscous medium (sugar water).
    • Second, he explained the jittery dance of microscopic particles - Brownian motion - as the buffets of surrounding atoms.
    • Filaments of the cytoskeleton are so thin they can be pushed around by the random movements, or so-called Brownian motion, of other, neighboring molecules.
    • This does not occur in practice, since random forces such as Brownian motion perturb the cell's trajectory.

Origin

Late 19th century: named after Robert Brown (1773–1858), the Scottish botanist who first observed the motion.

Definition of Brownian motion in US English:

Brownian motion

nounˌbrounēən ˈmōSHənˌbraʊniən ˈmoʊʃən
Physics
  • The erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium.

    〔物理〕布朗运动

    Example sentencesExamples
    • Second, he explained the jittery dance of microscopic particles - Brownian motion - as the buffets of surrounding atoms.
    • Filaments of the cytoskeleton are so thin they can be pushed around by the random movements, or so-called Brownian motion, of other, neighboring molecules.
    • The amplitude of the displacements of unattached beads diminishes with a constant slope of - 2, as expected for Brownian motion in a viscous medium (sugar water).
    • This does not occur in practice, since random forces such as Brownian motion perturb the cell's trajectory.
    • The voltage signal produced by the photodiode is calibrated in force units using the power spectrum of Brownian motion.

Origin

Late 19th century: named after Robert Brown (1773–1858), the Scottish botanist who first observed the motion.

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