Description: Great DIY experiment toy to help kids learn the Electrostatic Principle, and cultivate kids interest in physics and science. Install the experiment device model as pictures shown, put 2 pieces 1.5V AA batteries in battery box, press the button, we will see that the rotation of the fan leaves the foam particles also followed fly fast spin up. A few seconds later, turn off the switch ,we found that the foam particles were adsorbed on the inner wall of the plastic cup. Material: ABS Plastic Color: As pictures shown (Random Color) Assembled Size(LxWxH): Approx. 15 x 7.7 x 14cm / 5.9 x 3.03 x 5.51 inch Experiment Principle: Due to the limited space, the foam and the inner wall of the plastic cup continue to undergo "contact separation" and produce static electricity. When the fan stops, the foam is very light and can be easily adsorbed by static electricity, so we see that they are Adsorbed on the inner wall of the cup without falling off. Package Includes: 1 Set DIY Experiment Toy (Batteries are not included) Note: Choking Hazard - Small parts not for children under 3 years. Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc., the color tone of the website's photo and the actual item could be slightly different. Also please allow a slight difference in size which may caused by manual measurement
