Brownian movement
Noun
Meaning
the random motion of small particles suspended in a gas or liquid
Source: WordNetSynonyms
Hypernyms
Examples
Maxwell thought that Brownian movement was more because of some unobserved external disturbance and hence if “submitted to a more powerful microscope the bodies will demonstrate only more perfect repose”.
These papers were the foundation for the 1905 paper on Brownian motion, which showed that Brownian movement can be construed as firm evidence that molecules exist.