What does the cross product of electric and magnetic field vectors `(vecE xx vecB)` indicate?

Explanation

To understand what the cross product of the electric field vector \(\vec{E}\) and the magnetic field vector \(\vec{B}\) indicates, we can follow these steps:

### Step 1: Understand the relationship between electric and magnetic fields in electromagnetic waves
In an electromagnetic wave, the electric field vector \(\vec{E}\) and the magnetic field vector \(\vec{B}\) are perpendicular to each other. Additionally, both vectors are also perpendicular to the direction of wave propagation.

### Step 2: Define the cross product
The cross product of two vectors \(\vec{A}\) and \(\vec{B}\) is given by:
\[
...