Diffusion | Definition & Examples | Britannica
2024年12月3日 · diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room.
Diffusion: Definition and How Does it Occur (with Diagram) - Science …
2023年11月21日 · Diffusion is defined as the movement of atoms, ions, and molecules from a region of high concentration to a region of low concentration, or ‘down their concentration gradient ’. The word ‘diffusion’ is derived from the Latin word, ‘diffundere’, meaning ‘to spread out’.
Diffusion - Definition, Examples and Types | Biology Dictionary
2017年4月27日 · Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. The material that diffuses could be a solid, liquid or gas.
Diffusion - Wikipedia
Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in Gibbs free energy or chemical potential.
What Is Diffusion? - Definition, Types & Examples Of Diffusion
Diffusion is the process of movement of molecules under a concentration gradient. It is an important process occurring in all living beings. Diffusion helps in the movement of substances in and out of the cells. The molecules move from a region of higher concentration to a region of lower concentration until the concentration becomes equal ...
What is the process of diffusion? - BBC Bitesize
Diffusion is the process by which particles of one substance spread out through the particles of another substance. Diffusion is how smells spread out through the air and how concentrated...
Diffusion in cells - Living organisms - KS3 Biology - BBC
Diffusion is the movement of particles from higher to lower concentrations. Diffusion happens naturally and so does not require energy. Substances like oxygen, carbon dioxide and...
What Is Diffusion? - ThoughtCo
2019年4月10日 · Diffusion is the tendency of molecules to spread out in order to occupy an available space. Gasses and molecules in a liquid have a tendency to diffuse from a more concentrated environment to a less concentrated environment. Passive transport is the diffusion of substances across a membrane.
Diffusion - an overview | ScienceDirect Topics
Diffusion is a measurement that describes how difficult it is for molecules to move in space. Thus, depending on the viscosity of the medium and the structural properties of the neuropil, the same molecule could experience very different diffusion processes.
What is Diffusion? (with pictures) - AllTheScience
2024年5月21日 · In general terms, diffusion simply means the spreading of a substance or quality from an area of relatively high concentration to an area of lower concentration. The term is most commonly used to describe the process by which molecules of different types achieve a uniform concentration, after initially being unevenly distributed, through their ...