Results 31 to 40 of about 1,538 (69)

Three dials, and a few more: a practical introduction to accurate gnomonics [PDF]

, 2007
Sundials provide an interesting application for the MetaPost graphical programming language, at the intersection of geometry, astronomy and time.
Roegel, Denis
core   +1 more source

Look up, city skygazers [PDF]

, 2017
This is a research-design project looking for tools to rebuild the lost connection between city dwellers and the cosmos through visual effects, spatial experience and materials implemented in public spaces in a modern city.
Qian, Yiyang
core   +1 more source

A Universal Sundial Made for Sultan Mehmet II, in the Context of Astronomical Instrumentation in late-15th Century Istanbul

Suhayl. Journal for the History of the Exact and Natural Sciences in Islamic Civilisation
In this study we present a previously-unknown astronomical and mathematical instrument. This is a sundial for all latitudes made in 1477 and dedicated to the Ottoman Sultan Mehmet II who is known for his interest in astronomy. It is a unique example
David A. King, François Charette
semanticscholar   +1 more source

О СИММЕТРИИ ПРОЕКТИВНЫХ КРИВЫХ [PDF]

, 2016
Известные методы поиска симметрии выпуклых овалов обобщены для нового класса плоских проективных кривых, включающего вещественные кубические кривые. Предлагаемый метод использует только построение касательных, но не требует вычисления кривизны.
Селиверстов, А.В.
core  

Reconstruction of vertical and L-shaped ancient Egyptian sundials and methods for measuring time

, 2014
The article presents the results of the study of design features of vertical and L-shaped ancient Egyptian sundials. With the help of astronomical methods were developed their models, based on which the reconstruction of a sundial was held.
Vodolazhskaya, Larisa
core  

Teaching of geographical space relations for cartography – Academic Outdoor Station in Poznan (Poland) [PDF]

, 2019
. The identification of geographical phenomena and relations between them are most frequently visualized, analyzed and interpreted indoor by the display screen.
Beata Medynska-Gulij, Dariusz Lorek, Maciej Smaczynski, Paweł Cybulski, Tymoteusz Horbinski, Łukasz Halik, Łukasz Wielebski   +6 more
core   +1 more source

From star field affiliation to sundial theory: spatial expression in Qing dynasty Taiwan gazetteers

Humanities and Social Sciences Communications
Star field affiliation is an important part of ancient Chinese gazetteers. The gazetteers of Taiwan in the Qing Dynasty presented many ‘different opinions’ about the star field affiliation of Taiwan.
Yao Liu, Wenwen Feng
semanticscholar   +1 more source

Latvijas Zinātņu akadēmijas, Latvijas Universitātes Astronomijas institūta populārzinātnisks gadalaiku izdevums [PDF]

, 2013
Saturs: Pēdējā "Apollo" ekspedīcija uz Mēnesi ; Vissavienības Astronomijas un ģeodēzijas biedrības Latvijas nodaļa ; M.Gills. ESON – astronomijas popularizēšanas tīkls ; S.Kropa. Dvēsele Atakamas tuksnesī ; M.G.
Alksnis, Andrejs, Latvijas Universitāte. Astronomijas institūts, Latvijas Zinātņu akadēmija   +2 more
core  

Scale-Up Considerations of the Sundial Rotating Fresnel Solar Collector

SolarPACES Conference Proceedings
In the frame of the ASTEP project two prototypes of the Sundial collector, together with a Phase Change Material Thermal Energy Storage, will be tested integrated with the industrial processes of two sites. However, the size of the pilot systems will not
M. Ibarra, R. Barbero, Magdalena Barnetche, Rubén Abbas, Antonio Rovira   +4 more
semanticscholar   +1 more source

Visual Geolocation of a Stationary Camera [PDF]

, 2014
Tato práce se zabývá a analyzuje možnosti, kterými je možno zjistit geografickou polohu ze snímků nebo videa pouze za použití vizuální informace z obrazu.    Výsledkem práce jsou dvě rozdílné metody geo-lokalizace.
Šimurda, Pavel
core