Restricted Parking Zone Program (RPZ) How to Initiate an RPZ Program for your Neighborhood. In order to establish an RPZ, there must be a significant degree of parking by non-residents. The Seattle Municipal Code (updated in June 2009) specifies the threshold that must be met in order to establish an RPZ.
A magnet (from Greek Î¼Î±Î³Î½Î®ÏÎ¹Ï Î»Î¯Î¸Î¿Ï magná¸tis lÃ­thos, Magnesian stone) is a material or object that produces a magnetic field.
Magnets are pieces of metal that have the ability to attract other metals. Every magnet has two poles: a north and a south. Much like electrical charges, two similar magnetic poles repel each other; while opposite magnetic poles attract each other. Magnets have a continuous force around them that is known as a magnetic field. This field enables them to attract other metals. Figure 1 illustrates this force using bar and horseshoe magnets. The shape of the magnet dictates the path the lines of force will take.