A sequence of experiments aimed at exploring magnetic force on moving charged particles is presented. At first students work with equipment that reproduces Thomson’s experiment of 1932. Afterwards they analyze images of sub-nuclear particle tracks in cloud and streamer chambers in historical experiments. The sequence has been tested with high school students. Our results compared with the ones reported in the literature indicate that students’ understanding of the direction and magnitude of the magnetic force markedly improved and some typical difficulties were overcome.
Lorentz’ force as a Tool for physics inquiry: studying particle tracks in cloud and streamer chambers
ONORATO, PASQUALE;DE AMBROSIS VIGNA, ANNA
2014-01-01
Abstract
A sequence of experiments aimed at exploring magnetic force on moving charged particles is presented. At first students work with equipment that reproduces Thomson’s experiment of 1932. Afterwards they analyze images of sub-nuclear particle tracks in cloud and streamer chambers in historical experiments. The sequence has been tested with high school students. Our results compared with the ones reported in the literature indicate that students’ understanding of the direction and magnitude of the magnetic force markedly improved and some typical difficulties were overcome.File in questo prodotto:
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