The Experts below are selected from a list of 12 Experts worldwide ranked by ideXlab platform
David Castro - One of the best experts on this subject based on the ideXlab platform.
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APPROCHES DIDACTIQUES À L’ÉCOLE MATERNELLE : LA NUMÉRIQUE ET LA TRADITIONNELLE AU CAS DE LA LUMIÈRE / TEACHING APPROACHES AT THE KINDERGARTEN: THE DIGITAL AND THE TRADITIONAL IN THE CASE OF Light
2019Co-Authors: David CastroAbstract:Dans cet article est presentee une recherche sur le role de l’enseignement qui vise a la destabilisation des representations mentales des eleves de l’ecole maternelle sur la lumiere. La transformation des representations a ete etudiee sur deux groupes d’enfants d’âge de 5-6 ans, dont l’un participe aux interactions didactiques basees sur un logiciel numerique du type « scratch » tandis que le deuxieme suit les activites didactiques traditionnelles. Dans toutes les trois questions de recherche etudiees, les progres entre le pre-test et le post-test ont ete statistiquement significatifs pour les eleves du premier groupe, au niveau de l’explication des phenomenes lies a la lumiere, compatible au modele scientifique. In this article is presented a research on the role of teaching aimed at the destabilization of mental representations of the students of the kindergarten school on the Light. The transformation of representations was studied on two groups of children aged 5-6 years, one of whom participates in didactic interactions based on a “scratch” software while the second follows traditional teaching activities. In all three questions studied, progress between pre-test and post-test was statistically significant for students in the first group, in terms of explaining Light-Related Phenomena, consistent with the scientific model. Article visualizations:
Djamel Abdelmoula - One of the best experts on this subject based on the ideXlab platform.
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A New Nature for Light
viXra, 2016Co-Authors: Djamel AbdelmoulaAbstract:This work is a part of unpublished ideas about fundamental physics and there evolution over time. In this paper, I started by speaking about Light and its nature as the cornerstone of physics. Then we describe the evolution of ideas about Light and interpretations of its nature in terms of waves and particles; A duality which lead us to suggest a new nature of Light at a halfway between these two interpretations. We reinvented the photon that we renamed "photillon". However, it remains to test this new approach in the interpretation of Light-Related Phenomena. An attempt to interpret Young's interference fringes is made on the basis of this new conception of Light and a new interpretation of the Planck constant has emerged naturally from this new nature.
B. F. Mcpherson - One of the best experts on this subject based on the ideXlab platform.
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Relationships between wind velocity and underwater irradiance in a shallow lake (Lake Okeechobee, Florida, USA)
Journal of the American Water Resources Association, 1998Co-Authors: Charles G. Hanlon, R. L. Miller, B. F. McphersonAbstract:: Relationships between wind velocity and the vertical Light attenuation coefficient (K0) were determined at two locations in a large, shallow lake (Lake Okeechobee, Florida, USA). K0 was significantly corRelated with antecedent wind conditions, which explained as much as 90 percent of the daily variation in K0. Sub-surface irradiance began to change within 60 to 90 minutes of the time when wind velocity exceeded or dropped below a threshold value. Maximum one hour changes in K0 were > 50 percent, however, 20 to 30 percent changes were more common. The magnitude of change in K0 varied spatially based on differences in sediment type. K0 never exceeded 2.8 at a location where bottom sediments were dominated by a mixture of coarse sand and shells. In comparison, K0 exceeded 9 during episodic wind events where the bottom sediment was comprised of fine grain mud. Underwater irradiance data can be used to determine threshold wind velocity and account for the influence sediment type has on K0. Once a threshold velocity has been established, the frequency, rate, and duration of expected change in underwater irradiance can be evaluated. This is critical information for scientists who are studying algal productivity or other Light-Related Phenomena.
Charles G. Hanlon - One of the best experts on this subject based on the ideXlab platform.
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Relationships between wind velocity and underwater irradiance in a shallow lake (Lake Okeechobee, Florida, USA)
Journal of the American Water Resources Association, 1998Co-Authors: Charles G. Hanlon, R. L. Miller, B. F. McphersonAbstract:: Relationships between wind velocity and the vertical Light attenuation coefficient (K0) were determined at two locations in a large, shallow lake (Lake Okeechobee, Florida, USA). K0 was significantly corRelated with antecedent wind conditions, which explained as much as 90 percent of the daily variation in K0. Sub-surface irradiance began to change within 60 to 90 minutes of the time when wind velocity exceeded or dropped below a threshold value. Maximum one hour changes in K0 were > 50 percent, however, 20 to 30 percent changes were more common. The magnitude of change in K0 varied spatially based on differences in sediment type. K0 never exceeded 2.8 at a location where bottom sediments were dominated by a mixture of coarse sand and shells. In comparison, K0 exceeded 9 during episodic wind events where the bottom sediment was comprised of fine grain mud. Underwater irradiance data can be used to determine threshold wind velocity and account for the influence sediment type has on K0. Once a threshold velocity has been established, the frequency, rate, and duration of expected change in underwater irradiance can be evaluated. This is critical information for scientists who are studying algal productivity or other Light-Related Phenomena.
R. L. Miller - One of the best experts on this subject based on the ideXlab platform.
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Relationships between wind velocity and underwater irradiance in a shallow lake (Lake Okeechobee, Florida, USA)
Journal of the American Water Resources Association, 1998Co-Authors: Charles G. Hanlon, R. L. Miller, B. F. McphersonAbstract:: Relationships between wind velocity and the vertical Light attenuation coefficient (K0) were determined at two locations in a large, shallow lake (Lake Okeechobee, Florida, USA). K0 was significantly corRelated with antecedent wind conditions, which explained as much as 90 percent of the daily variation in K0. Sub-surface irradiance began to change within 60 to 90 minutes of the time when wind velocity exceeded or dropped below a threshold value. Maximum one hour changes in K0 were > 50 percent, however, 20 to 30 percent changes were more common. The magnitude of change in K0 varied spatially based on differences in sediment type. K0 never exceeded 2.8 at a location where bottom sediments were dominated by a mixture of coarse sand and shells. In comparison, K0 exceeded 9 during episodic wind events where the bottom sediment was comprised of fine grain mud. Underwater irradiance data can be used to determine threshold wind velocity and account for the influence sediment type has on K0. Once a threshold velocity has been established, the frequency, rate, and duration of expected change in underwater irradiance can be evaluated. This is critical information for scientists who are studying algal productivity or other Light-Related Phenomena.