Mills' Mess "The pattern received its name from fellow jugglers at the 1976 International Juggling Convention in Los Angeles, California. Steve Mills did not know how to "teach" this pattern and while trying different methods of teaching this pattern with many proficient jugglers, they shouted 'this is a mess.'" Mills did not know this was being called "Mills Mess" around the world for several years. Mills Mess can be combined with chops, claws, or other juggling maneuvers or flourishes to create a pattern that is moderately more difficult than the traditional three-ball cascade. Though most commonly performed with balls, bean-bags or similar
Constant k filter that. The design techniques used by Campbell have largely been superseded. However, the ladder topology used by Campbell with the constant k is still in use today with implementations of modern filter designs such as the Tchebyscheff filter. Campbell gave constant k designs for low-pass, high-pass and band-pass filters. Band-stop and multiple band filters are also possible. Some of the impedance terms and section terms used in this article are pictured in the diagram below. Image theory defines quantities in terms of an infinite cascade of two-port sections, and in the case of the filters being discussed, an infinite ladder