| 释义 |
‖ pedesis|pɪˈdiːsɪs|
[a. Gr. πήδησις leaping.]
A name given by Prof. Jevons to the Brownian movement of minute particles: see Brownian a.
1878Jevons in Q. Jrnl. Sc. Apr. 170/1 Some writers have called it the Brownian movement... I have ventured to coin..a new word, and call the motion pedesis, from Gr. πήδησις leaping or bounding. 1892Nature XLV. 430/1 The fact that pedesis is stopped by the addition of an electrolyte would appear to indicate that the water complices are disintegrated in the presence of ions. |