Reflection and refraction of a <a href="https://en.wikipedia.org/wiki/en:plane_wave" class="extiw" title="w:en:plane wave">plane wave</a> at the <a href="https://en.wikipedia.org/wiki/en:Brewster%27s_angle" class="extiw" title="w:en:Brewster's angle">Brewster's angle</a> : unpolarised light is reflected as totally transverse electrical, the transmitted beam is partially polarised in the transverse magnetical direction.  Are drawn and labelled : incoming and refracting angles, magnetic (B) and electric (E) fields, the right angle between reflected and refracted waves.
<a href="//commons.wikimedia.org/wiki/User:Brachycerophilia" title="User:Brachycerophilia">Brachycerophilia</a>
2008-06-03
<span class="int-own-work" lang="en">Own work</span>