Lenz's Law http://physicstoys.blogspot.com/p/physics-toy-store.html A strong neodymium magnet falls slowly down a copper bus bar as though passing through a viscous liquid. Since magnetic fields pass through copper, magneview film reveals the location of the falling dipole magnet. Moving magnetic fields from the falling magnet produce electric currents in the copper. These currents then produce magnetic fields that have the opposite polarity to the initial field. So a falling magnet makes the co

The M72 LAW is a lightweight, disposable 66mm rocket launcher designed for infantry, effective against armored vehicles and fortifications since the 1960s. | Military Mechanics