紫外線を扱う学習を支援するための自作紫外領域反射率計の作製―モンシロチョウ♂♀の翅の反射率測定を例として―

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タイトル別名
  • Development of a Hand-made Ultraviolet Region Reflectometer to Support Learning Ultraviolet Rays: An example of Measuring the Wing Reflectance of the Cabbage White Butterfly ♂♀
  • シガイセン オ アツカウ ガクシュウ オ シエン スル タメ ノ ジサク シガイ リョウイキ ハンシャリツケイ ノ サクセイ : モンシロチョウ ♂ ♀ ノ シ ノ ハンシャリツ ソクテイ オ レイ ト シテ

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説明

<p>A hand-made ultraviolet region reflectometer was made to support the learning of ultraviolet rays, which is mainly studied in high school. The purpose of this hand-made ultraviolet region reflectometer is to enable accurate and quantitative measurement of UV reflectance. A polyvinyl chloride (PVC) end cap was used for the main body, a 365 nm LED was used as the light source, and a photodiode (PD) for ultraviolet region as a detector.</p><p>Non-fluorescent paper was examined as a reference instead of the standard diffuse reflector so that it would be easier to use in class, and it was confirmed that non-fluorescent paper can indeed be used as a reference.</p><p>The cabbage white butterfly (Pieris rapae) was used as the experimental material. The cabbage white butterfly is famous for recognizing males and females by actively using near-ultraviolet rays. The hand-made ultraviolet region reflectometer was used to measure the anterior and posterior wings, and the dorsal and ventral sides of males and females, respectively, and quantitatively compare the differences in reflectance.</p><p>As a result, the reflectance of the female wing was higher than that of the male wing in all parts, as in the previous study, and it was found that the value measured by this hand-made ultraviolet region reflectometer had a high correlation with the result obtained by a commercially available spectral reflectometer.</p><p>The hand-made ultraviolet region reflectometer can thus be used as a learning material to support the learning of ultraviolet rays, and can also be used for individual experiments by students. This learning material is easy to handle, inexpensive to produce, and accurate. It is a teaching material that is expected to support learning not only ultraviolet rays, but also for scientific inquiry learning with SSH.</p>

収録刊行物

  • 科学教育研究

    科学教育研究 45 (3), 308-315, 2021

    一般社団法人 日本科学教育学会

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