Sell (Dreamlandss) DIY Science Experiment Model Kit Pinhole Imaging Materials Creative Toys best price

Specification: Material: Wood Size: 14.5*7.5*6cm / 5.7*3.0*2.4in Recommended age: over 4 years old Candle (about 1cm high): not included Knowledge class: Using a plate with a small hole between the screen and the object, the image of the object will be formed on the screen, we call this phenomenon pinhole imaging. Moving the middle plate back and forth, the image on the screen will change the size, which explains the nature of light traveling in straight lines. Pay Attention: When assembling the products, the red wire connects to the positive pole of the battery box and the blue wire connects to the negative pole of the battery box. All products do not carry batteries; accessories color is random; do not specify the color. Please read carefully before buying. Contains small accessories and sharp objects. Children should be accompanied by adults. Please take care of children and avoid from swallowing. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X DIY Science Experiment Kits