Solar Power Crookes Radiometer Educational Science Toy Sun Light Energy Vanes

【Educational Science Toy】: The solar power Crookes radiometer is a nice physics teaching toy, under sunlight or strong irradiation, the vanes inside will automatically rotate 【Principle】: Sun light energy vanes, when the sun shines, the black vane surface absorbs heat energy, and the white vane surface releases heat energy, that drives the vanes to rotate 【Premium Material】: The solar Crookes radiometer windmill is made of premium high boron glass, sturdy, not easy to break and crack, and ensures a long time to use 【Desktop Ornament】: The solar power Crookes radiometer is a nice addition to your home decoration, suitable for decorating the desk, table, shelf, cabinet, entrance, fireplace, office, bedroom, living room, etc 【Nice Gift】: The Crookes radiometer is a nice gift choice for kids, family and friends on Christmas, birthdays, parties, festivals, housewarmings, etc

Specification:

Material: high boron glass

Size Chart:

Height 21cm/8.27inch Ball diameter 9cm/3.54inch Base diameter 8cm/3.15inch

Package Includes:

1 Solar Crookes Radiometer

Note: