Experiment of Artificial Snow Crystals for Science Education

人造雪晶科学教育实验

• 批准号: 14580187
• 负责人: KAGAWA Kiichiro
• 金额: $ 0.77万
• 依托单位: University of Fukui
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580187/
• 关键词: artificial snow crystal; crystal observation; treezing mixture; static electricity; 静電気と結晶の核生成; 雪の結晶; 静電気; タンポポの毛

Artificial snow Crystals were produced by a simple method using a mixture of salt and ice crushed into sherbet as the cooling material.The freezing mixture was contained in a thermos, and a black acrylic plate was placed on it as a substrate after being charged up.The water vapor in the air trapped in the closed space was crystallized onto the surface of the acrylic plate. The crystals in the thermos were observed using a stereomicroscope with a working distance of 65 mm.For high temperature and high humidity environments, a compact dry box or refrigerator was employed to make the air in the thermos properly dry.Another method of production of artificial snow crystals have also been developed using thin synthetic fibers in a thermos containing a freezing mixture of salt and crushed ice.In advance, the fibers were charged up by static electricity and the charged fibers were put in a small plastic vessel, which was placed on a freezing mixture in the thermos.Water vapor was supplied by diffusion from slightly wetted paper placed at the top of the thermos.Several minutes later, artificial snow crystals appeared on the fibers.It was also demonstrated that snow crystals with very good symmetry are produced using dandelion hairs that extend near vertical plane in the vessel.It was proved that the seeds of nuclear of snow crystals are produced at charged up thorns on the hairs.

人造雪晶的制作方法很简单，将盐和冰的混合物粉碎成果子露作为冷却材料，将冷冻后的混合物装在保温瓶中，充入水后，将黑色亚克力板作为基底放置在保温瓶上，封闭空间内的空气中的水蒸气在亚克力板的表面结晶。使用工作距离为65 mm的体视显微镜观察保温瓶中的晶体。对于高温和高湿度环境，使用紧凑的干燥箱或冰箱使保温瓶中的空气适当干燥。还开发了另一种生产人造雪晶的方法，在含有盐和碎冰的冷冻混合物的保温瓶中使用薄合成纤维。通过静电使纤维带电，并将带电的纤维放入小塑料容器中，将该容器置于保温瓶中的冷冻混合物上。通过从置于保温瓶顶部的稍微润湿的纸扩散来供应水蒸气。几分钟后，人造雪晶出现在纤维上。还证明了具有非常好的对称性的雪晶是使用延伸到近证明了雪晶核的晶种是在雪毛上带电的刺上产生的。

项目成果

香川喜一郎: "帯電したタンポポの毛を用いた人工雪生成実験"雪氷. 65巻. 29-32 (2003)

香川喜一郎：“使用带电蒲公英毛发的人工造雪实验”《雪与冰》卷 65. 29-32 (2003)。

K.KAGAWA: "Production of artificial snow crystals using chaged thin hairs in a thermos containing a mix ture of salt and ile"Current Applicd Physics. (in press). (2004)

K.KAGAWA：“在装有盐和海藻混合物的保温瓶中使用细毛制造人造雪晶”当前应用物理学。

K.KAGAWA: "Production of artificial snow crystals using changed hair of dandelion"Journal of the Japanes Society of Snow and Ice. Vol.65. 29-32 (2003)

K.KAGAWA：“利用蒲公英变毛制作人造雪晶”日本冰雪学会杂志。

香川喜一郎: "教育現場で使用できる人工雪生成実験"応用物理教育. Vol.28. (2004)

香川喜一郎：“可用于教育环境的人工造雪实验”应用物理教育第 28 卷（2004 年）。

Kiichiro KAGAWA: "Production of artificial snow crystals using charged thin hairs in a thermos containing a mixture of salt and ice"Current Applied Physics. (未定). (2004)

Kiichiro KAGAWA：“在含有盐和冰的混合物的保温瓶中使用带电细毛生产人造雪晶体”当前应用物理学（待定）。