Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth

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It is well known that the length and orientation of a shadow cast by a vertical gnomon depends on the time of the day and on the season of the year. But it also depends on the latitude of the site of observation. During the equinoxes, the temporal sequence of the shadows cast by each of the points t...

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Autores principales: Camino, N., Gangui, A.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0031921X_v50_n1_p40_Camino
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_0031921X_v50_n1_p40_Camino2023-10-03T14:43:36Z Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth Camino, N. Gangui, A. It is well known that the length and orientation of a shadow cast by a vertical gnomon depends on the time of the day and on the season of the year. But it also depends on the latitude of the site of observation. During the equinoxes, the temporal sequence of the shadows cast by each of the points that form any object follows a straight line from west to east. A simple construction using sticks and threads can be used to materialize the plane of the celestial equator's local projection, giving us a way to calculate our astronomical latitude during daytime with high precision. © American Association of Physics Teachers. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0031921X_v50_n1_p40_Camino
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description It is well known that the length and orientation of a shadow cast by a vertical gnomon depends on the time of the day and on the season of the year. But it also depends on the latitude of the site of observation. During the equinoxes, the temporal sequence of the shadows cast by each of the points that form any object follows a straight line from west to east. A simple construction using sticks and threads can be used to materialize the plane of the celestial equator's local projection, giving us a way to calculate our astronomical latitude during daytime with high precision. © American Association of Physics Teachers.
format JOUR
author Camino, N.
Gangui, A.
spellingShingle Camino, N.
Gangui, A.
Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth
author_facet Camino, N.
Gangui, A.
author_sort Camino, N.
title Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth
title_short Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth
title_full Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth
title_fullStr Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth
title_full_unstemmed Diurnal Astronomy: Using Sticks and Threads to Find Our Latitude on Earth
title_sort diurnal astronomy: using sticks and threads to find our latitude on earth
url http://hdl.handle.net/20.500.12110/paper_0031921X_v50_n1_p40_Camino
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AT ganguia diurnalastronomyusingsticksandthreadstofindourlatitudeonearth
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