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1. On some Improvements in the Instruments of Nautical Astronomy
Published online by Cambridge University Press: 16 March 2015
Extract
The excessive motion of a ship at sea renders the use of the ordinary instruments employed on land impossible, and restricts the sailors to the use of one on the principle of the duplication of images discovered by Hadly.
- Type
- Proceedings 1851-52
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- Copyright
- Copyright © Royal Society of Edinburgh 1857