Brownian motion is the erratic, jittery motion of small particles that was first observed by Robert Brown in 1827.
What is Brownian motion? How is it related to the development of the idea that matter is particulate?
Match the words in the left column to the appropriate blanks in the sentences on the right.
First described by Scottish botanist Robert Brown, Brownian motion is the ______ motion of particles suspended in a ______ (a liquid or a gas).
This motion is the result of the collision of these particles with the _______ atoms or molecules (i.e., the particles) in the fluid.
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