My Stupid Questions Thread First, https://www.physicsforums.com/archive/t-10193_What_is_a_field?.html [Broken], you will see a thread called "What is a field?" - The thread starter asked, very pointedly, Note that he didn't ask "how is a field produced", "how is a field measured/defined", or "how can a field be detected", "what are a field's mathematical properties", etc., Rather, he wanted to know WHAT IS A FIELD. The honest answer would have been something along the lines of "We don't exactly know", or "here's one theory..." - but instead he was double-talked (innocently enough) until finally someone, at the bottom of the thread, finally responded with "As someone said earlier, no one actually KNOWS why they work, they just do." This question stuck in my mind for a long time. One day, several years ago, I was experimenting in Adobe Illustrator. I made a rimless wheel of spokes. Then I duplicated it, and moved it to the right. What I saw astounded me. I cloned the wheel again, and shifted it to the right. I repeated this a few times, until finally I got this: Click here to see a .gif representation of the image I created. Tell me those lines-of-interference from the spokes (slash particles?) don't look eerily like classic magnetic Lines of Force? Thoughts anyone? Could there be an answer here with regard to the mechanics involved in creating lines of force?