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
Sound the Alarm (band) Sound the Alarm (band) Sound the Alarm is an American pop rock band from Bangor, Pennsylvania. The band consists of singer Cody Jancovic, guitarists Joe Brule and Brian Chiusano, bassist Colin Ellis, and drummer Rick Stephans. Their newest album, "Stay Inside", was released on July 17, 2007 by Geffen Records. Sound The Alarm was formed in 1999 by Cody Jancovic, Brian Chiusano, Colin Ellis, Rick Stephans in their hometown of Bangor in Upper Mount Bethel Township, Pennsylvania. At that time, the band members were only 12 years old. The four played covers of favorite bands under the name Sleepwell. After