Vehicle horn England, developed a standard electric car horn in 1910. Car horns are usually electric, driven by a flat circular steel diaphragm that has an electromagnet acting on it in one direction and a spring pulling in the opposite direction. The diaphragm is attached to contact points that repeatedly interrupt the current to that electromagnet causing the diaphragm to spring back the other way, which complete the circuit again. This arrangement opens and closes the circuit hundreds of times per second which creates a loud noise like a buzzer or electric bell, which sound enters a horn to be amplified. There
A Loud Call A Loud Call A Loud Call is the third studio album by Australian indie-folk artist Holly Throsby. It was released on 14 July 2008, which peaked at No. 34 on the ARIA Albums Chart. Throsby worked with Nashville-based producer, Mark Nevers (Lambchop, Andrew Bird). At the ARIA Music Awards of 2008 she was nominated for Best Female Artist for the album. Most of "A Loud Call", the third studio album by Australian indie folk singer-songwriter, Holly Throsby, was recorded at Beech House Studios, the residence of producer Mark Nevers, in South Nashville, United States. Nevers had previously produced material for