Results 21 to 30 of about 2,344 (157)

Defocus Controller for a Rotatory Fresnel Collector

open access: yesSolarPACES Conference Proceedings, 2023
Solar heat for industrial processes (SHIP) is becoming one of the most attractive solutions for industry decarbonisation. Solar plants require a complex control system to manage the fluctuation of their source, solar radiation.
Magdalena Barnetche   +5 more
doaj   +1 more source

Family of the Sun-and-Stars Time-Determining Instruments (Ilseong-jeongsi-ui) Invented During the Joseon Dynasty [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2016
We analyze the design and specifications of the Sun-and-Stars Time-Determining group of instruments (Ilseong-jeongsi-ui, 日星定時儀) made during the Joseon dynasty.
Yong Sam Lee   +2 more
doaj   +1 more source

A Study of the Yang-gyeong-gyu-il-ui (兩景揆日儀) in the Joseon Dynasty [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
The Yang-gyeong-gyu-il-ui (兩景揆日儀) is a kind of elevation sundial using three wooden plates. Sang-hyeok Lee (李尙爀, 1810~?) and Byeong-cheol Nam (南秉哲, 1817~1863) gave descriptions of this sundial and explained how to use it in their Gyu-il-go (揆日考) and Ui-
Yong Sam Lee   +2 more
doaj   +1 more source

Alessandra Pagliano. Le ore del sole. Geometria e astronomia negli antichi orologi solari romani

open access: yesDiségno, 2019
The book by Alessandra Pagliano grew out of research for the exhibition “Le ore del Sole” which took place from September 21st 2018 to January 31st 2019 at the Archaeological Museum of Naples (MANN), where twelve Greek-Roman sundial clocks were ...
Cristina Candito
doaj   +1 more source

Sundial Horizontal dalam Penentuan Penanggalan Jawa Pranata Mangsa

open access: yesUlul Albab: Jurnal Studi dan Penelitian Hukum Islam, 2018
Sundial sebagai instrumen astronomi bersejarah yang dapat digunakan dalam menyelesaikan masalah-masalah dasar astronomi. Penanggalan Jawa Pranata Mangsa yang penentuannya berdasarkan posisi Matahari menjadi hal yang dapat diperhitungkan.
Muhammad Himmatur Riza
doaj   +1 more source

New Inscriptions from Smyrna

open access: yesGephyra, 2021
The latest corpus of the inscriptions from Smyrna was published by Georg Petzl in Die Inschriften von Smyrna, Teil II,2: Addenda, Corrigenda und Indices, in series of Inschriften griechische Städte aus Kleinasien, volume 24,2, Bonn: Dr. Rudolf Habelt, in
Akın ERSOY, Ş. Recai TEKOĞLU
doaj   +1 more source

Sundial

open access: yes, 2019
View of south side Vol Walker with sundial in foreground. (Verso: [engr.

core   +3 more sources

Image of inverted World Tree on the stone slab and vessels of the Bronze Age [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2016
The article presents the results of the study of petroglyphs on a unique stone slab discovered near the kurgan 1 of the kurgan field Varvarinsky I (Rostov Oblast, Russia).
Vodolazhskaya, L.N.   +2 more
doaj   +1 more source

A THEORETICAL EXPLORATION OF A SUNDIAL OF THE FRANCISCAN FRIARY IN DUBROVNIK (CROATIA)

open access: yesZbornik Radova: Geografski institut "Jovan Cvijić", 2018
The Franciscan friary in Dubrovnik (Croatia) has two old wall sundials mounted in the small and large monastery cloisters. Both indicate equinoctial hours according to the apparent solar time. It is known for one who made it and the year it was made in —
Milutin Tadić, Zorica Prnjat
doaj   +1 more source

A Study on the Sundials of the Kang Family of Jinju [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
In this paper, we investigate the sundials made by the Kang Family of Jinju in the later period of the Joseon dynasty in terms of their characteristics, functions and the manufacturing technique. One of the characteristics of these sundials is that the
Sang Hyuk Kim, Ki-Won Lee, Yong Sam Lee
doaj   +1 more source

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