Diffusion Equation

📊 intermediate

$$J = -D \frac{dC}{dx}$$

Fick's law

Variables & Units

$J$

Flux

Unit: $mol/m^2s$

$D$

Diffusion coefficient

Unit: $m^2/s$

$C$

Concentration

Unit: $mol/m^3$

$x$

Distance

Unit: $m$

Key Information

📐 Derived From

Empirical

💡 Example

Gas diffusion

🔧 Applications

Chemistry

⚠️ Constraints

Steady state

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