Electromagnetic wave with wavelength λ, propagating in direction x, comprising the component of electric field E in phase with the magnetic field B; all three directions (E, B and x are orthogonal to each other.
This drawing is based on:
You are permitted and indeed encouraged to use this image freely, for any legal purpose including commercial, and with any modifications (the permission is hereby given, so there is no need to ask for it explicitly again), but you MUST always give the following credits:
S. Zurek, Encyclopedia Magnetica, CC-BY-4.0
We would appreciate if you let us know of any use: email@example.com