@article{oai:kobe-c.repo.nii.ac.jp:00001980,
 author = {中川, 徹夫 and NAKAGAWA, Testuo},
 issue = {1},
 journal = {神戸女学院大学論集, KOBE COLLEGE STUDIES},
 month = {Jun},
 note = {P(論文), Densities of liquids such as ethanol and water have been measured using microscale experiments at room temperature. Instead of an even balance and an ordinary graduated cylinder, an electronic balance and a 5- or 10-mL graduated cylinder have been used as equipments. Observed densities of ethanol and water are (0.779 ± 0.001) g・mL-1 respectively, and these values are in good agreement with references. In this procedure, the least amount of ethanol or water used for a density measurement is ca. 1.5mL and it takes ca. 2 minutes. That is, both the amount of reagents and the experiment time are drasically reduced comparing with those in the ordinary experiments. Moreover, our microscale experiment is simpler than the traditional one with a pycnometer because densities are directly measured, not obtained via specific gravity to pure water. Therefore, it has been clarified that our microscale experiment on measuring densities of liquids is useful and informative as teaching materials for high school science.},
 pages = {113--122},
 title = {マイクロスケール実験によるエタノールと水の密度測定},
 volume = {58},
 year = {2011},
 yomi = {ナカガワ, テツオ}
}