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
Black Man with a Horn track down what has happened to Mortimer, after Mortimer goes missing during a hurricane. A disturbing clue turns up in his bedroom. The story ends with his frightened next door neighbor having seen a black face at her window, something like a man wearing a gas mask or a snorkel. The narrator wonders how long it will be until the thing comes for him. Black Man with a Horn "Black Man with a Horn" is a horror novella by American writer T. E. D. Klein; part of the Cthulhu Mythos cycle, it originally published in "New Tales of the Cthulhu