加熱式簡易濁度計の試作とその多面的活用
2003 年 27 巻 3 号 p. 171-178
詳細
2003 年 27 巻 3 号 p. 171-178
In order to improve science literacy, the present authors have been developing several kinds of teaching materials in the field of home economics education. One such recent example is a new type of turbidimeter, which consists of a solar cell and a light emitting diode furnished with a cooling function. By using this material, they attempts to determine the gelatinizing temperature of starch and the value of cloud point of nonionic surfactants. These figures stand very close results with those reported in the previous empirical studies. Finally, they present several teaching examples in a classroom context in which this turbidimeter will be employed.
