<ul><li>When you place this on a table, the blades will turn when exposed to sunlight or artificial light</li><li>This crookes is made of high borosilicate glass, which is transparent and clear in appearance, and the inner rotating blades can be seen</li><li>This uses the principle of light energy and is a good physics teaching tool</li><li>This can be used as a teaching device for solar science experiments, and students will feel very interesting in the learning process</li><li>This can be used as a window sill decoration at home or as a holiday , with a simple design and a beautiful look</li></ul><br><br>

iplusmile Solar Power - Sun Light Energy Vanes Windmill Rotating Glass Crookes Educational Teaching Study Tool for Office Home School