{ "454": { "_id": "dialface-454", "_rev": "2-cea84113ea230e51cb9a25a933401913", "id": 454, "type": "dialface", "thumb_baseurl": null, "metadata": { "General Information": { "DOI": "10.17171/1-1-3924", "Title": "Dialface ID 454", "Creator": "Berlin Sundial Collaboration", "Publisher": "Edition Topoi", "Publication Year": "2014", "Subtitle": "Unknown", "Description": "Information on the Dialface ID 454 / Object ID 415" }, "Technical characteristics": { "Collection": "Ancient Sundials", "Contributor Name": "Gerd Graßhoff, Elisabeth Rinner", "Contributor Type": "Editor", "Resource Type": "Dataset", "Date (Update)": "2014" }, "Specific attributes": { "Origin / Holder object": "None", "Inventory Number": "", "Holder digital source": "Exzellenzcluster 264 – Topoi" }, "Conditions for use": { "Rights": "Creative Commons BY-NC-SA 3.0 DE" }, "Annotations": { "Subjects": "History of Science, Archaeology", "Version": "1" }, "References": [ { "type": "article", "id": "Bull1975", "citekey": "Bull1975", "collection": "repository", "title": "A Tripartite Sundial from Tell er Ras on Mt. Gerizim", "year": "1975", "author": [ { "name": "Bull, Robert J." } ], "journal": { "name": "Bulletin of the American Schools of Oriental Research", "volume": "219", "pages": "29--37" }, "pages": "p. 29-34." } ] }, "origin_entry_num": 400, "holder_id": 0, "scis": {}, "material_id": 5, "references_citations": [ "\\cite{Bull1975}, p. 29-34.", "\\cite{Severino_Adam2004}, p. 46." ], "version_date": "20140917", "dating_str": "unknown", "site_filter_key": "west_bank/tel_er_ras", "holder_filter_key": "unknown", "version_num": 1, "obj_descr": "A tripartite sundial from Tell Er Ras, Zeus Temple, Mt Gerizim, (by R. J. Bull, Drew University, USA). Bull: The sundial, formed from a block of local limestone 440 mm long, 300 mm wide and 325 mm high, has suffered damage, especially to its top and back. As a result, most of its dimensions and many of its details have been determined. At the back of the limestone block two spaces, each in the shape of a quarter-sphere, one at either end of the block, have been hollowed out of the stone. This triple sundial probably functioned in the following manner: If the limestone block was positioned so that Sundial 3 was oriented to the east and Sundial 2 to the west, Sundial 1 would face north. The rising sun would cause two shadows to be cast, one by the gnomon on the face of Sundial 1, the other by the gnomon of Sundial 3. Both shadows would move from the first hour, A, progressively through the six hours of the morning until the sixth hour, noon, vertical shadows would lie along the lines marked by the numeral F. Observer A facing south and looking at the north face of Sundial 1 would in the course of the morning hours see the gnomon shadow progress from its right to its left, while at the same time Observer B facing north and looking at Sundial 3 would see the gnomon shadow progress in the course of the morning hours, from left to right. As the afternoon progressed the shadow on the dial of Sundial 1 would continue to progress from right to left through the last hour of the day. At the same time Sundial 3 would increasingly fall into shadow whereas from the hour of noon, the gnomon shadow on Sundial 2 would begin to mark the afternoon hours moving from left to right as viewed by Observer B.", "site_id": "West BankTel er Ras", "material_filter_key": "limestone", "type_filter_key": "plane/planar_vertical_deviating", "dating_filter_key": [ "not_dated" ], "obj_id": 415, "type_id": 16, "siteSpecific": "Zeus Temple", "df_descr": "By cutting through the length of the block at an angle of 33\" from the vertical (fig. 3, photograph 3) a surface 44 cm. long by 39 cm. wide was formed (fig. 1). On this reclined surface at approximately 30 cm. above the projected bottom edge of the stone a horizontal line, AB, at least 41 cm in length, was scribed. Below line AB and at its center, point Z, three semi-circles with radii of 11 cm, 12.5 cm, and 20.5 cm, respectively, were cut. At every 15\" of arc around the 1800 of the semi-circles, lines radiating from point Z were scribed between the semi-circumference of the 11 cm radius semicircle and that of the 20.5 cm radius semicircle. In this manner eleven scribed lines divided the area between the innermost and outermost semicircles into twelve equal sectors. Vertical line GC, 21 cm long, was scribed perpendicular to line AB (fig. 1). At point G, 3 cm below point Z, a 1 cm square, 4 cm deep hole with sides perpendicular to the reclined surface had been cut (fig. 3). The hole was partly covered by a flow of lead, in the center of which had been formed a square hole approximately 1 cm on each side. It seems clear that at one time a metal gnomon had been fitted into the hole and had stood perpendicular to the 33\" reclined surface. As one faces the reclined surface with its inverted and regularly divided semicircles which form the face of Sundial 1 (figs. 1 and 2, photograph 1), traces of ten inscribed Greek capital letters, 1.5 cm high, can be seen to the right of each of the scribed lines, radiating from point Z at intervals of 15 of arc. ", "references_bibliography": [ "\\cite{Bull1975}", "\\cite{Severino_Adam2004}" ], "gibbs_number": "", "inventory_num": "", "thumb_file": null, "hierarchy_entries": [], "doi": "10.17171/1-1-3924", "holder": { "id": 0, "longitude": null, "department": null, "institution": null, "country": "Unknown", "filter_key": "unknown", "city": "Unknown", "name": "Unknown", "latitude": null }, "material": { "id": 5, "category": "Limestone", "subcategory": null, "filter_key": "limestone" }, "site": { "id": "West BankTel er Ras", "country": "West Bank", "filter_key": "west_bank/tel_er_ras", "latitude": 32.209, "longitude": 35.264, "city": "Tel er Ras", "name": "Tel er Ras, West Bank" }, "type_obj": { "id": 16, "category": "Plane", "subcategory": "Planar-vertical deviating", "filter_key": "plane/planar_vertical_deviating" }, "resources": [] } }