From the Scale Model of the Sky to the Armillary Sphere
| Autor: | Carlos Paez, Alejandro Gangui, Roberto Casazza |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
media_common.quotation_subject
Ciencias Físicas Bent molecular geometry Ciencias de la Educación General Physics and Astronomy FOS: Physical sciences purl.org/becyt/ford/5.3 [https] Popular Physics (physics.pop-ph) Physics - Popular Physics HISTORYOF ASTRONOMY Education law.invention CIENCIAS SOCIALES purl.org/becyt/ford/1 [https] Diurnal motion law Physics Education (physics.ed-ph) Solstice Sun path Instrumentation and Methods for Astrophysics (astro-ph.IM) media_common purl.org/becyt/ford/5 [https] Physics - Physics Education Astronomy ASTRONOMY purl.org/becyt/ford/1.3 [https] ASTRONOMY IN CULTURE Celestial mechanics Educación General Physics::History of Physics Astronomía Sky Physics::Space Physics Astrophysics - Instrumentation and Methods for Astrophysics Scale model CIENCIAS NATURALES Y EXACTAS Armillary sphere |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| DOI: | 10.48550/arxiv.1505.03732 |
| Popis: | It is customary to employ a semi-spherical scale model to describe the apparent path of the Sun across the sky, whether it be its diurnal motion or its variation throughout the year. A flat surface and three bent semi-rigid wires (representing the three solar arcs during solstices and equinoxes) will do the job. On the other hand, since very early times, there have been famous armillary spheres built and employed by the most outstanding astronomers for the description of the celestial movements. In those instruments, many of them now considered true works of art, Earth lies in the center of the cosmos and the observer looks at the whole "from the outside." Of course, both devices, the scale model of the sky and the armillary sphere, serve to represent the movement of the Sun, and in this paper we propose to show their equivalence by a simple construction. Knowing the basics underlying the operation of the armillary sphere will give us confidence to use it as a teaching resource in school. Comment: Published version available at http://cms.iafe.uba.ar/gangui/didaastro/#Publications |
| Databáze: | OpenAIRE |
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