Accurate measurement of short-time intervals
Book details
- Title
- Accurate measurement of short-time intervals
- Publication year listed
- 1922
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Accurate measurement of short-time intervals
Year: 1922
The method consists in producing simultaneously on a moving photographic film a record of the occurrence of the events under consideration and timing lines from a tuning fork acting as a shutter. This shutter consists of two opaque vanes, in which narrow slits have been cut, mounted on the prongs of a tuning fork, so that the slits are parallel to the axis of the fork, and coincide when the fork is at rest. When the fork vibrates the two slits will coincide twice during each complete period of the fork. The shutter is brilliantly illuminated, and the light which passes through as a flash when the shutter is opened is focused on the film by means of a suitable optical system. The accuracy depends on the accuracy of the tuning forks, of which there are three cl