On a moveable horizontal sun-dial, which shows apparent solar time within a small fraction of a minute.
Príomhchruthaitheoir: | |
---|---|
Citation: | Proceedings of the Royal Irish Academy, Ser. 1, Vol. VI, p. 491, 1853-7 |
Formáid: | Journal Article |
Foilsithe / Cruthaithe: |
1853-7
|
Ábhair: |
At the NLI:
See Main Catalogue entry for
Proceedings of the Royal Irish Academy