Results 21 to 30 of about 2,731 (171)

A Study on the Operation Mechanism of Ongnu, the Astronomical Clock in Sejong Era [PDF]

Journal of Astronomy and Space Sciences, 2011
Ongnu (Jade Clepsydra; also called Heumgyeonggaknu) is a water clock was made by Jang Yeong-sil in 1438. It is not only an automatic water clock that makes the sound at every hour on the hour by striking bell, drum and gong, but also an astronomical ...
Sang Hyuk Kim, Yong Sam Lee, Min Soo Lee
doaj   +1 more source

The Image of an Architect and Masonic Symbols in Works by Milorad Pavić

Respectus Philologicus, 2021
The paper analyzes works by the Serbian postmodernist writer Milorad Pavić. It attempts to prove that he possesses knowledge of royal art and uses masonic symbols in his writing related to geometry and architecture, including the radiant delta, compass ...
Zoriana Huk
doaj   +1 more source

The extended permutohedron on a transitive binary relation [PDF]

, 2013
For a given transitive binary relation e on a set E, the transitive closures of open (i.e., co-transitive in e) sets, called the regular closed subsets, form an ortholattice Reg(e), the extended permutohedron on e.
Santocanale, Luigi, Wehrung, Friedrich
core   +4 more sources

The Odonata of Isle Royale, Michigan [PDF]

, 2017
This paper presents a list of the Odonata recorded from Isle Royale National Park, located in northwestern Lake Superior. Collections from Isle Royale include 38 species of Anisoptera and 12 species of Zygoptera. The list is typical of the boreal regions
Van Buskirk, Josh
core   +2 more sources

The refined method for calculating the volume of a silver vessel from the Maykop kurgan [PDF]

Cultural Heritage and Modern Technologies
This article describes a method for calculating the volume of a silver vessel "with a rosette" from the Maikop burial mound using a refined geometric model. It is concluded that the calculated volume is close to the upper limit of the volume of the large
Vodolazhskaya L.N.
doaj   +1 more source

For Whom The Clock Drips [PDF]

, 2009
Classic
Riggsby, Andrew M.
core   +1 more source

How Did E. M. Walker Measure the Length of the Labium of Nymphs of \u3ci\u3eAeshna\u3c/i\u3e and \u3ci\u3eRhionaeschna\u3c/i\u3e (Odonata: Aeshnidae)? [PDF]

, 2018
The exhaustive studies of nymphs of Aeshna Fabricius and Rhionaeschna Förster by E. M. Walker (1912-1958) have long guided the taxonomy of these groups and formed the basis for keys still in use today.
DuBois, Robert B, Tennessen, Kenneth J
core   +2 more sources

Structure and Conceptual Design of a Water-Hammering-Type Honsang for Restoration [PDF]

Journal of Astronomy and Space Sciences, 2012
We analyzed the manufacturing procedure, specifications, repair history, and details of celestial movements of the water-hammering type Honsang (celestial globe).
Yong Sam Lee, Sang Hyuk Kim
doaj   +1 more source

Egypt’s Contribution to the Invention of Time Measurement [PDF]

, 2018
The invention and establishment of the water clock in Egypt, at first glance, seems to be one of the best-documented developments in the history of ancient technology.
Schomberg, Anette
core   +1 more source

Silver vessels - clepsydras from the Maykop kurgan [PDF]

Cultural Heritage and Modern Technologies
The article examines silver vessels from the excavations of the Maykop kurgan, analyzes the images on them, their sizes and shapes, and also provides calculations of the volume of one of the vessels.
Vodolazhskaya L.N.
doaj   +1 more source