著者

Kondo Yasushi

出版者

近畿大学理工学総合研究所

雑誌

Science and technology = 理工学総合研究所研究報告 (ISSN:09162054)

巻号頁・発行日

no.30, pp.21-29, 2018-02

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[概要]We often let a student make a cloud chamber at experiments on demand for radiation education. A student,who successfully observed a radiation track, was interested in not only radiations but also science.Therefore,we believe that "making a cloud chamber" is very useful for science education.Unfortunately, not all students were successful to observe tracks so far. In this paper, we present an easy way how to make a cloud chamber that is 100% successful to observe tracks.放射線に関する教育の一環として、筆者は出張実験などで学生に霧箱を作成させることを行ってきた。飛跡を見ることができると学生は放射線だけでなく科学に対する興味を持つことができるので、霧箱の作成は教育効果が高いと考えている。しかしながら、残念なことに「すべての生徒が飛跡の観察に成功した」訳ではなかった。本稿では、簡単に制作でき、しかも100%飛跡を観察することができる改良された拡散霧箱の作り方について議論する。

著者

中口 譲 高山 真太郎 佐野 到

出版者

近畿大学理工学総合研究所

雑誌

Science and technology = 理工学総合研究所研究報告 (ISSN:09162054)

巻号頁・発行日

no.29, pp.33-41, 2017-02

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Atmospheric samples were collected from March to June in 2014. Major ionic constituent (Na+ , NH4+ , K+ , Mg2+ , Ca2+, F- , Cl- , NO3- ,SO42-) , PM2.5 and PMc were observed. Asian Dust storm event were observed from May 28 to June 1 during this sampling period. The concentrations of F-, NO3- , K+, NH4+, Mg2+, Ca2+ in coarse fraction were increased during Asian Dust storm event. The concentrations of SO42- , NH4+, K+ were increased during Asian Dust storm event. The high correlation was recognized between Na+ and Cl- in the coarse fraction. The high correlations were recognized between SO42-, NH4+, K+, Ca2+ and PM2.5.