- #1

deuteron

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- TL;DR Summary
- Mathematically, E & H fields are parallel to each other, then why do we take E & B for electromagnetic waves?

We have the following constitutive relations:

$$ \vec D= \epsilon_0 \vec E +\vec P$$

$$\vec B=\mu_0\vec H + \vec M$$

And Maxwell's equations are:

$$\nabla\cdot\vec D = \rho$$

$$\nabla\cdot \vec B=0$$

$$\nabla\times\vec E=-\frac{\partial\vec B}{\partial t}$$

$$\nabla\times\vec H=\vec j +\frac{\partial\vec D}{\partial t}$$

then why do every book (e.g.: Jackson, Griffith's) mention ##E## and ##B## fields when talking about electromagnetic waves and not the ##E## and ##H## waves?

$$ \vec D= \epsilon_0 \vec E +\vec P$$

$$\vec B=\mu_0\vec H + \vec M$$

And Maxwell's equations are:

$$\nabla\cdot\vec D = \rho$$

$$\nabla\cdot \vec B=0$$

$$\nabla\times\vec E=-\frac{\partial\vec B}{\partial t}$$

$$\nabla\times\vec H=\vec j +\frac{\partial\vec D}{\partial t}$$

then why do every book (e.g.: Jackson, Griffith's) mention ##E## and ##B## fields when talking about electromagnetic waves and not the ##E## and ##H## waves?