Einstein's theory of diffusion

Einstein’s theory of diffusion describes how particles spread from areas of high concentration to low concentration over time, driven by random motion. He showed mathematically that this process is related to temperature, particle size, and the medium's properties. His work provides a fundamental understanding of how molecules diffuse, which explains phenomena like ink dispersing in water or gases mixing in the air. This theory forms the basis for understanding many processes in physics, chemistry, and biology, illustrating how microscopic randomness leads to predictable, large-scale behavior.