Two files containing information on the Cowper-Coles sound intensifier and locator
- Cowper-Coles, Sherard Osborn
Two folder containing brief descriptions of the Cowper-Coles sound intensifier and locator, which consisted of a reflector fitted with a microphone which could be used to amplify sounds and determine their direction. There are also some photographs of the equipment along with a copy of a sketch of the Cowper-Coles apparatus for the destruction of submarines.
- Open Access