Perrin (Perrin's law)

Perrin's law describes how the size of particles, such as bacteria or colloids, affects their behavior under physical forces like gravity or electromagnetic fields. It states that smaller particles tend to move or diffuse more easily, while larger ones are more affected by forces like sedimentation. Essentially, the law connects particle size with their mobility and stability in suspension, informing us how particles of different sizes will settle, disperse, or respond to external influences in various environments, which is important in fields like microbiology, chemistry, and material science.