- Photon has spin equal to 1, should photo need some structure to full fill its spin equal to one?
A photon with enough energy can create a pair of electron and positron and we call it pair production. And a position and electron meet can create a photon , we call it annihilation of electron and positron. And we know a photon has a spin of 1, when pair production happen , require positron and electron has spin in same direction. Or we say electron and position are entangled with its spin. We can say a photon with enough energy contain all the ingredient to make a pair of electron and positron. The ingredient of an electron is its mass and an electrical charge with spin, so does a positron. When a photon with high enough energy, the energy of photon can be the ingredient of mass of electron and positron. But how about the spinning charge? Are they out of nothing or inside the photon actually have a pair of spinning massless charge? And in the process of pair production, the spining charge pair in the photon split and attached onto the mass create using the energy conversion. Here we are adding another conservation, spinning charge conservation, instead allow a pair of electric charge come from nothing. It seem by adding this conservation,some of the mystery in quantum physics seems easier to explain. which I think should talk about them seperately. In conclusion , a photon actually containg a pair of spinning charge to make up its spin (magnetic moment).