Black swan emblems and popular culture and Swan Nook (Tas). The Gazetter also lists two "White Swan" toponyms: a mine and reservoir near St Arnaud, on the Victorian goldfields. A clear concentration is evident in New South Wales and Tasmania. By contrast, the toponymist Reed lists only three examples: Swan Hill and Swan Pond in Victoria, and Swan Point in Tasmania (all named by explorers after sighting black swans in large numbers). In Sydney, there are thirteen "Swan" street names and one "Black Swan" street name, in contrast to a lone "Swan" street name in Darwin. The rarer form of "Cygnet" ("young swan") occasionally occurs. The
Swan neck duct low pressure turbine. For the latter purpose a swan neck duct is an example of an "inter-turbine diffuser". Swan neck duct A swan neck duct is a jet engine component, usually situated within the compression or turbine expansion system. Many jet engines have a short annular passageway, linking two components, where there is a large change in mean radius, from front to rear. The shape of the resulting passageway is often similar to that of a swan or goose neck. Consequently, such a passageway is called a swan (or goose) neck duct. The duct provides a continuous matching of the