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  2. Diffusion - Wikipedia

    en.wikipedia.org/wiki/Diffusion

    Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) ... which they do not. In the animation on the right, the ion in the left ...

  3. Molecular diffusion - Wikipedia

    en.wikipedia.org/wiki/Molecular_diffusion

    Molecular diffusion, often simply called diffusion, is the thermal motion of all (liquid or gas) particles at temperatures above absolute zero. The rate of this movement is a function of temperature, viscosity of the fluid and the size (mass) of the particles.

  4. Diffusion equation - Wikipedia

    en.wikipedia.org/wiki/Diffusion_equation

    The diffusion equation is a parabolic partial differential equation. In physics, it describes the macroscopic behavior of many micro-particles in Brownian motion , resulting from the random movements and collisions of the particles (see Fick's laws of diffusion ).

  5. Heat equation - Wikipedia

    en.wikipedia.org/wiki/Heat_equation

    D is the diffusion coefficient that controls the speed of the diffusive process, and is typically expressed in meters squared over second. If the diffusion coefficient D is not constant, but depends on the concentration c (or P in the second case), then one gets the nonlinear diffusion equation.

  6. Anomalous diffusion - Wikipedia

    en.wikipedia.org/wiki/Anomalous_diffusion

    Anomalous diffusion is a diffusion process with a non-linear relationship between the mean squared displacement ... Boltzmann's transformation, Parabolic law (animation)

  7. Stable Diffusion - Wikipedia

    en.wikipedia.org/wiki/Stable_Diffusion

    Stable Diffusion is a deep learning, text-to-image model released in 2022 based on diffusion techniques. The generative artificial intelligence technology is the premier product of Stability AI and is considered to be a part of the ongoing artificial intelligence boom .

  8. Brownian motion - Wikipedia

    en.wikipedia.org/wiki/Brownian_motion

    This observation is useful in defining Brownian motion on an m-dimensional Riemannian manifold (M, g): a Brownian motion on M is defined to be a diffusion on M whose characteristic operator in local coordinates x i, 1 ≤ i ≤ m, is given by ⁠ 1 / 2 ⁠ Δ LB, where Δ LB is the Laplace–Beltrami operator given in local coordinates by ...

  9. Diffusion bonding - Wikipedia

    en.wikipedia.org/wiki/Diffusion_bonding

    Animation of the Diffusion Welding process. Diffusion bonding or diffusion welding is a solid-state welding technique used in metalworking, capable of joining similar and dissimilar metals. It operates on the principle of solid-state diffusion, wherein the atoms of two solid, metallic surfaces intersperse themselves over time.