Altitude sundials for seasonal and equal hours
Annals of Science 53 (1):75-84 (1996)
| Abstract |
Altitude sundials do not require knowledge of the N-S direction to quantify time in terms of either seasonal or equal hours. Methods for determining the corresponding dial patterns are reviewed, and accurately computed data for a latitude of 51°N presented as horizontal, vertical, rectangular, and pillar dials on both timekeeping systems
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| DOI | 10.1080/00033799600200121 |
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