حرکت خالص مولکولها یا اتم ها از یک ناحیه با غلظت بالا (یا پتانسیل شیمیایی بالا) به ناحیه ای با غلظت پایین (یا پتانسیل شیمیایی پایین)
Diffusion is the process where particles randomly move around and gradually spread out from areas where they're concentrated to areas where they're sparse, until they're distributed evenly throughout. This matters because it's a fundamental way that substances mix and spread in liquids and other materials, happening naturally without any external force pushing them along.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).