Isolation (illusion) important developments was the combination of crystal ball isolations and body-popping/locking/waving dance styles, as seen in the styles of, amongst others, Nik Robson and Matt Hennem in the '90s. Isolation (illusion) In contact juggling, poi spinning, hooping and other types of object manipulation, an isolation is an illusion whereby a prop appears to float in space, with the performer's hands and body moving around it. In reality the performer is supporting the prop, and countering his or her movement relative to the prop. Michael Moschen is originally credited for developing several of the techniques for ball isolations (as well as
Technical director devices and displays to ensure quality control. Technical directors commonly work on productions that are either broadcast live or recorded on video tape or video servers. Television productions shot on film generally do not use TDs, as the camera cuts and effects are realized in post production after the shooting is completed. The terminology in the UK differs in some respects from the above description: The production control room is called a "gallery", a mobile production truck is called an "OB van" or a "scanner" (a BBC term). In UK television practice, the technical director is the senior technical person