======Levitating Tinsel====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Flying Tinsel, Levitating Tinsel ====Summary==== {{$demo.summary}} ====Procedure==== - Make a loop of aluminized tinsel, leaving two ends (legs) hanging. - Tape a Styrofoam cup upside down in the center of an aluminum pie pan to form a handle. - Rub a large Styrofoam sheet with wool for at least 30 seconds to charge it. - Place the pie pan on top of the charged Styrofoam. Touch the pie pan with your finger to give it a positive charge. - Pick up the pie pan using only the Styrofoam cup handle. Keep your hands away from the metal. - Turn the pan upside down, holding it above your head with the flat side facing up. - Hold the tinsel loop about 10 cm above the pie pan, then release it. - Observe as the tinsel falls, briefly touches the pan, and then repels upward, floating in mid-air. ====Links==== Science Experiments: Flying Tinsel - STEM Learning: {{youtube>b7m_DsVyZ6k?}}\\ 📄 Flying Tinsel - Exploratorium: [[https://www.exploratorium.edu/snacks/flying-tinsel]]\\ ====Variations==== * Experiment with different tinsel lengths and shapes (e.g., strips vs. loops). * Test how humidity affects the ability to hold a charge. ====Safety Precautions==== * Use only in dry conditions; high humidity reduces effectiveness. ====Questions to Consider==== * Why does the tinsel float above the pan instead of sticking to it? (Because after touching the pan, both the tinsel and pan have the same charge, so they repel.) * Why does the tinsel open into a circle as it floats? (The positive charges spread out along the tinsel and repel each other.) * What would happen if you touched the tinsel while it was flying? (It would lose its charge and fall.) * How is this similar to static cling in clothing or the way photocopiers work? (Both involve electrostatic attraction and repulsion.)