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 (Howie Day album) featuring the album tracks "Be There", "40 Hours" and "Counting on Me". The EP was released to iTunes on May 5, 2009. Sound the Alarm (Howie Day album) Sound the Alarm is the third full-length album by American singer-songwriter Howie Day, and the follow-up to his million-selling second album "Stop All the World Now". It was recorded over a three-year period, during which he attended a rehabilitation center for alcohol abuse. The album was originally set for release in 2008 before being delayed and eventually released by Epic Records on September 8, 2009. In late 2008, Day uploaded the song