Crookes Radiometer Handmade Solar Power Glass Windmill with 4 Spinning Vanes Desk Toys Home Office Decoration Gift

Features: brand new and high quality for Ideal for use in education, research, solar energy, and all types of science. This radiometer demonstrates heat radiation emitted by sources of light. When you put the radiometer in the Sun, the vanes will keep spinning. It is a for creative gift, we can send it to our friends or family.They will love it! It is made of glass and fragile. It is suitable for children over 14 years of age.

Specifications: Material: Glass Size: 125x90x90x80mm/ 4.92x3.54x3.54x3.14 in

Package Includes: 1x Glass Windmill ​

note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.