Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!mailrus!rutgers!bellcore!tness7!tness1!sugar!emcalc From: emcalc@sugar.UUCP (William M. Schmidt) Newsgroups: sci.misc Subject: Re: magnetic propulsion Message-ID: <1874@sugar.UUCP> Date: 22 Apr 88 03:43:48 GMT References: <2010@ttardis.UUCP> Organization: Sugar Land UNIX - Houston, TX Lines: 7 Summary: It's been done. The main formula is the Lorentz Force Law What you have described can certainly be done. A young man here in Houston built such a device and did very well at a science fair that I recently judged. The main formula that you use is, of course the Lorentz Force Law ( F = iL x B). You'll probably find that your biggest problem will be the coils overheating. As they get hot their resistance goes up and the voltage required to drive the projectile goes up.