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 Silence A Loud Silence A Loud Silence is the first studio album by the Portuguese singer-songwriter and producer Renato Freitas, under the pseudonym Lizzy's Husband. It was recorded during 2013. Two singles were released from the album, "Petrichor" and "A Place for the Ghosts", with a music video for the first produced by Freitas, premiering on the national TV channel, RTP, music show "Poplusa". The album was released digitally under a Creative Commons license (Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)). In December 2015, Bandcom created an online poll, "Best Portuguese Album of the Year", in which the album was included and