TitleElectromagnetic mechanismAbout this objectThe object is an educational or laboratory apparatus from the late 19th to early 20th century, used to demonstrate electromagnetic principles. It features two electromagnet coils with a flat mental pendulum positioned in between, which alternately touches each coil as it is energised. This design suggests it may have been part of a telegraph sounder – a key component in the Morse telegraph system. Telegraph sounders converted electrical pulses sent long a telegraph line into audible clicks, as a small iron armature was attracted and released by the two coils. Trained operators then translated the sound indicators into dots and dashes to decode messages. Object No.99.74DimensionsL: 270mmSourceLa Perouse MuseumOn displayNoTypeMuseum objectsOrganisations (Detailed entries)La Perouse Museum (La Perouse, N.S.W.)ThemesScience and communication
