Please link me to threads that may already discuss this because i do not really know what to search for when i use the word substance. I neglect to use the word matter because matter in physics world means mass and i neglect to use the word particles because in physics world they usualy pertain to our standard model. Im not keen on the idea of modelling light through its wave ppts and have decided to attempt to model Young Slit Results by code, trying to simulate through particle model (idea came from jezzball) Sorry the keyboards messed so i dont have question or quotation marks. SO MY QUESTIONS ARE: (0) What ^substance^ makes up E and B fieldsin EM waves and what allows them to propogate in the cross direction(is it because of the discharge from the last reaction it came from). (1)And what exactly is a charge. It is my belief that an interaction requires the transferance of substances over space, which also applies to attraction and repulsion. So what exactly is a charge that causes these two reactions. (2) If i remember correctly from physics ...an electron can cause and Electric Field around it. What is in this field.