Ha ebben a mezoben egy hullam terjed, akkor az egy osszecsatolodott skalarmezoben terjedo p-wave es a vektormezoben terjedo spinhullam. Csak igy lehet a haladasi iranyra meroleges elektromos es magneses vektorokat kapni, amelyek nem masok, mint az mezo elso derivaltjai.
"The name P-wave can stand for either pressure wave "
en.wikipedia.org/wiki/P-wave
Amennyiben ragaskodunk ahhoz, hogy a hypercharge es a weak isospin csatolasa 0.5 0.866 aranyu, akkor a menetiranyra merolegesen jobbra vagy balra forgo vektorokat kapunk. Erdekes modon a fotonnak pont ez a ket allapota lehetseges.
"The photon also carries a quantity called spin angular momentum that does not depend on its frequency.[23] The magnitude of its spin is {\displaystyle \scriptstyle {{\sqrt {2}}\hbar }} \scriptstyle{\sqrt{2} \hbar} and the component measured along its direction of motion, its helicity, must be ±ħ. These two possible helicities, called right-handed and left-handed, correspond to the two possible circular polarization states of the photon.[24]"