Hindered settling

Japanese: 干渉沈降 - かんしょうちんこう（英語表記）hindered settling

The phenomenon in which particles settle in a liquid or gas while being influenced by the walls of a container or by other particles that are settling at the same time. When the settling velocity is measured, it is usually slower than the free settling, which is when particles settle without any other influence. The higher the density of the particles in the liquid, or if the particles aggregate, the slower the settling velocity becomes.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

液体や気体の中で，微粒子が容器の壁や，同時に沈降しつつあるほかの粒子の影響を受けながら沈降する現象。沈降速度をはかると，ほかの影響を受けないで沈降する自由沈降に比べて，遅くなるのが普通。液体中で微粒子の密度が大きいほど，また粒子に凝集が起ると，沈降速度はいっそう遅くなる。

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