Details of exhibit
- Exhibition:
- 1911 Fifty-sixth Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- A frame containing a collection of records which are fully labelled, illustrating the action of a machine for the quantitative analysis of sound
- Exhibitor:
- A. E. Bawtree
- Section:
- V. Scientific Photography and Processes of Reproduction
- Exhibit No.:
- 702
- Description:
- The sound waves actuate a diaphragm which causes a concave mirror to deflect the image of a line of light which falls across a slit. A travelling strip of film behind the slit records the movement of the light spot. The slit is covered by an ordinary photographic ever-set shutter. A stroke on the bell shows when the commencement of the film passes the slit. Fuller details are attached to the machine.
(The machine is on stand in South Gallery.) - Exhibit type:
- Photograph
- Process:
- [Not Listed] ()
- Award:
- none
