Search results for "Solstice"
showing 6 items of 6 documents
Enduring Sacred Places: The Astronomical Orientation of the Iberian Cave-Sanctuary of Cueva Santa del Cabriel in Spain
2019
This paper presents the results of an archaeoastronomical study of the Iberian Iron Age cave-sanctuary of Cueva Santa del Cabriel, near the town of Mira in the province of Cuenca, Castilla-La Mancha, central Spain, together with a review of the latest archaeological and ethnographical data about the site. We found that the cave's 12 m-long access corridor is oriented precisely along the summer solstice sunset, so that the north wall of the main gallery is partially illuminated by sunlight at this time. Although the cave was in use from the Late Chalcolithic, it became an important religious centre in the Iberian period. After an apparent hiatus during the Roman and Islamic occupations, its …
Between “full moon and summer solstice”. The quest for transcendence in the poetry of Andrzej Busza
2019
The article is an attempt to describe the poet’s vision of human destiny, history and transcendence. Analysing poems from two poetry volumes I endeavour to present Busza’s philosophy. The poet notes and appreciates science and scientifi c achievements as well as civilisational development, although he realises that they may be dangerous for human spirituality and potentially lead to catastrophe.
An approximate calculation method for parallel and diffuse solar irradiances on inclined surfaces in the presence of obstructing mountains or buildin…
1983
This paper presents an approximate theoretical method to calculate solar irradiances received by inclined surfaces in mountain valleys or city streets. Results can be used in mesoscale and urban dynamic modelling.
Critical reading of some papers related to the Bibracte basin
2021
Since its discovery in 1987, the monumental basin of Bibracte questions archeologists because of its atypical orientation that was thought not to follow the way on which it lies. We study 4 archeoastronomical papers dealing with the orientation of the short and long axes on the sun rise at winter solstice or on peculiar stars and we discuss the validity of these hypotheses.
UV Index on Tilted Surfaces
2007
Solar ultraviolet erythemal irradiance (UVER) has been studied on inclined planes with different orientations in Valencia, Spain. To do this a platform was designed that could turn through 90 degrees on its own axis. The radiometers were inclined at an angle close to the latitude of Valencia (39.5 degrees N). Using two timers the platform could be turned through 90 degrees every 5 min. On clear or partially cloudy days, including those with different turbidity values, it was observed that the UVER showed a maximum at 1200 h GMT, very close to solar noon, in the north and south positions, while the maximum for east and west orientations was found at approximately one hour before and one hour…
CRITICAL REVIEW OF THE ARTICLE “DE BIBRACTE À AUGUSTODUNUM : OBSERVATIONS ARCHÉOASTRONOMIQUES”
2022
Were the towns of Bibracte and Augustodunum astronomically oriented? We study in this publication an article published in the Revue Archéologique de l'Est which puts forward the hypothesis that the Gallic town of Bibracte respects, in its main buildings, orientations corresponding to sunrise on the Romanized dates of the Celtic festivals and that the Roman city of Augustodunum is rather oriented, in its urban fabric, on sunrises at the solstice, like other Roman cities. Our study tends to invalidate these hypotheses, by re-examining the reliability of the measurements taken and the chronology of the constructions in relation to the establishment of the Julian calendar.