Fick’s Law FULL Derivation Explained | Most Tutorials Skip This...

In this video, we break down Fick’s Law of Diffusion from first principles and walk through a complete step-by-step derivation from Fick’s First Law to Fick’s Second Law. Most tutorials skip the key step, the mass balance on a differential control volume, but here we show every stage clearly so you fully understand where the equations come from. 🔍 What you’ll learn: ✔ What diffusion really is (physical intuition) ✔ The definition of flux (J = 1/A · dn/dt) ✔ Fick’s First Law and its meaning ✔ How to apply a differential mass balance ✔ Step-by-step derivation of Fick’s Second Law ✔ Why the second derivative appear? ✔ The difference between steady-state and transient diffusion ✔ Real engineering applications (membranes, catalysts, packaging) 🎬 RELATED VIDEOS ==================== 📌 Essential Maths You Must Know: https://youtu.be/O7Km07tGBfI 📌 Numerical Integration Excel Calculator: https://youtu.be/Ee_qBjch8us 📌 McCabe–Thiele Method Using Excel: https://youtu.be/dXE0j2PIeEY 🎓 RELATED COURSES ====================== 📌 Distillation Course: https://www.chemengstudent.com/courses/distillation/ 📌 Separation Processes Course: https://www.chemengstudent.com/courses/separation-processes/ 📌 Unit Operations Course: https://www.chemengstudent.com/courses/unit-operations/ 📖 ADDITIONAL RESOURCES ========================== 📌 Chemical Engineering Blog: https://www.chemengstudent.com/blog/ ⚙️ About The ChemEng Student The ChemEng Student provides tutorials, tools, and courses designed to help chemical engineering students understand complex topics and succeed in their studies. 🔔 Subscribe for more Chemical Engineering tutorials: https://www.youtube.com/c/TheChemEngStudent #distillation #chemicalengineering #McCabeThiele #processengineering #thechemengstudent