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,
Silver Horn Silver Horn Silver Horn or Haungooah (1860–1940) was a Kiowa ledger artist from Oklahoma. Silver Horn was born circa 1860 and was a member of the Kiowa Indian tribe of Oklahoma. His Kiowa name, Haungooah, refers to sunlight reflecting off a buffalo horn, making it gleam like a polished, white metal. He was a well-known artist from the early reservation period who was one of the most respected and talented Plains Indian artists in his time. Silver Horn's father was Agiati or "Gathering Feathers," who was a calendar keeper. Agiati was the chosen artistic successor of his uncle Dohasan, who