1, first wrap some tea leaves in gauze, tie them with a rope, and then put them in hot water.
2. Prepare an empty plastic bottle, scrape some soap foam with a knife, and then squeeze some liquid glue, laundry detergent and detergent.
3. Add some washing powder and sugar, and then drop a drop of glycerin into it.
4. Pour the brewed tea into the bottle, use tools to dissolve all the contents, and wait for the bubble water to cool before use.
Bubble formation reason:
Bubbles are formed by the surface tension of water. This tension is the mutual traction existing in the object and perpendicular to the contact surface of two adjacent parts when it is pulled. The mutual attraction between water molecules on the water surface is stronger than that between water molecules and air. These water molecules seem to be stuck together. But if the water molecules stick together excessively, bubbles will not form easily. Soap "breaks" the surface tension of water. It reduces the surface tension to only 1/3 under normal conditions, which is the best tension needed for blowing bubbles.