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Author: Echiburu, Mauricio ×

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    Teaching physics in real-life contexts: The Beirut explosion
    (2023-04-01) Echiburu, Mauricio; Hernández, Carla; Pino, Miguel
    Teaching physics in real-life contexts continues to be a challenge for teachers at different edu cational levels. In this article, three Context-Rich Problems are proposed to be implemented in the classroom for higher education, using the explosion that occurred in Beirut as a case study. These problems require the search and analysis of real data, integrating technologies as tools to learn physics. In particular, the analysis of images, videos, maps and audio recordings is suggested. The proposed activities are designed to promote active learning of classical mechanics subjects and the development of collaborative skills. The results of each problem allow a discussion based on scientific evidence in the classroom.
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    Study of the effect of seismically-induced geoelectric and geomagnetic fields on secondary particle detection at a LAGO site
    (2022-03-18) Coloma Borja, Diego Alberto; Carrera Jarrin, Edgar; Echiburu, Mauricio; LAGO Collaboration
    The LAGO (Latin American Giant Observatory) project is an extended Astroparticle Observatory at global scale. It is mainly oriented to basic research on three branches of Astroparticle physics: the Extreme Universe, Space Weather phenomena, and Atmospheric Radiation at ground level. This work is framed in the latter branch, its aim is to study the potential effects on extensive air showers from changes in geoelectric and geomagnetic fields, induced by the onset of seismic activity. For this purpose, simulations for flux of secondaries are performed with ARTI, a tool developed by LAGO that combines Magnetocosmics, CORSIKA, and Geant4 to account, respectively, for the propagation of a shower by a primary particle, geomagnetic corrections, and detector response. Using ARTI, we have calculated the radiation background at the LAGO Site in Universidad San Francisco de Quito (2200 m.a.s.l). Regular conditions for the Earth's electromagnetic field are taken from the NCEI Geomagnetic Calculator for specific fair-weathered days above the location. Variations from this regularity are introduced based on relevant studies on seismic activity. The results show that there exists an effect on the number of secondary particles at ground level, which could, in principle, be detected by a LAGO WCD detector.
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    Forbush decrease on September 6-13, 2017 observed by the Tanca water-Cherenkov detector
    (2021-05-07) de Aguiar, Renan; Campos Fauth, Anderson; LAGO Collaboration; Echiburu, Mauricio
    Solar activity was intense in September 2017 and its effects were observed in different detectors placed at the Earth’s surface. Three halo Coronal Mass Ejections (CME) hit the planet and caused magnetic storms. The effects of the CMEs on the flux of galactic cosmic rays at ground level were observed by the Tanca detector, which is one of the water-Cherenkov detectors (WCD) that make up the Latin American Giant Observatory (LAGO). In this paper we present the detection of Forbush events observed by Tanca during the month of September 2017. This WCD is installed on the campus of the University of Campinas, in Brazil, having three photomultiplier tubes that detect Cherenkov photons produced by cosmic radiation in 11400 liters of ultra pure water. We present the description and performance of the experimental apparatus and the observation on days 6th, 8th and 13th of the Forbush events originated by the CMEs. A decrease in the cosmic rays flux due to a stream inTeraction region was also observed on 14th September. These results were compared with observations made by neutron monitors and indices of the Earth’s magnetic activity.
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    Análisis físico del minuto 120 del partido Chile-Brasil en el Mundial de Fútbol 2014
    (2015-12) Echiburu, Mauricio
    Este trabajo presenta el análisis, desde un punto de vista físico, de la última jugada del alargue del encuentro entre Chile y Brasil, en el Mundial de Fútbol 2014. En dicho partido, el jugador chileno Mauricio Pinilla estrelló el balón en el larguero del arco de Brasil obligando a un alargue a penales. El análisis de la jugada comprende un estudio sobre el movimiento del balón y su posterior rebote en el arco, determinando las velocidades a través de la observación de videos de la jugada, y de estimaciones razonables para la situación. Además, se realiza un análisis de la fuerza de arrastre del aire sobre el balón para la jugada, obteniendo de ello cálculos de la energía cinética del balón antes y después del rebote, para luego estimar la fuerza y deformación que actúa sobre el balón. Todo este análisis se desarrolló con información y tecnología disponible para cualquier persona, de forma que los resultados sean replicables en el aula de clases. Por esto último se sugieren actividades docentes a desarrollar utilizando este análisis como base, para trabajar diferentes fenómenos de la Física, desde una mirada más cercana para los estudiantes.