Rainbow made by applying siphon principle Straw, in ancient China, was called "Zhuzi", "Pianti", "Kewu" or "Guoshanlong". At the end of the Eastern Han Dynasty, "kewu" for irrigation appeared. Ethnic minorities in southwest China often use a long, bent bamboo tube to drink alcohol, which also uses the physical principle of siphon. Now, let us use the siphon principle to make an automatic flower waterer!
Preparation materials: plastic bags, water, scissors, clips, rope, potted plants and various tools
1. Fill half of the water in a plastic bag
2. Use a clamp to load the plastic bag containing water onto the potted plant, as shown in the picture
3 , Use scissors to cut two ropes of the same length
4. Clamp one end of the rope with a paper clip and put it into the water bag, as shown in the picture
5. In this way, water can be transported to the flowerpot through the rope
6. Siphon made using siphon principle , can keep the flower pot moist for about half a month.
