Tag: Foghorn

​​What is a Foghorn and How does it work?

Most often used in foggy conditions, is a device that uses sound to warn vehicles of hazards. Generally, marine transport is using the term. When lighthouses are obscured the foghorn provides an audible warning of any dangers to ships. Robert Foulis created the first automated steam-powered foghorn. After hearing his daughter play piano in the fog, he realized the lower… Read more →