I'm glad to find this place. For all my wandering around the internet, I just discovered physicsforums. My experience is mostly in electricity and sound, but I like to explore just about anything. I like to learn and help others. I'm looking forward to getting to know you. Guitar-Roy P.S. - The little button under this editor that says "LATEX", is that the mark up language? Can we upload LaTeX stuff to these posts? If so, that is awesome.