Vehicle horn horn. Bicycles often have a classic "bulb horn", operated by squeezing a rubber bulb attached to a metal horn. Squeezing the bulb forces air through a steel reed located in the throat of the horn, making it vibrate, producing a single note. The flaring horn matches the acoustic impedance of the reed to the open air, radiating the sound waves efficiently, making the sound louder. Other types of horns used on bicycles include battery-operated horns (sometimes even car horns on 12-volt circuits are incorporated) and small air horns powered by a small can of compressed gas. Oliver Lucas of Birmingham,
The Sound of His Horn The Sound of His Horn The Sound of His Horn is a 1952 dystopian time travel/alternative history novel by the senior British diplomat John William Wall, written under the pseudonym Sarban. The novel has been included in several lists of the greatest fantasy novels of all time. Royal Navy lieutenant Alan Querdillon becomes a POW during the Battle of Crete during World War II. After escaping, and travelling through a forest he runs into a barrier of 'Bohlen Rays', is knocked unconscious and awakens in a Nazi controlled world at least a hundred years after World War II on the