3 ms·
You need to let air through or else it creates a vacuum. What's happening is it just slows the flow of air enough to be able to get suction from the fluid. Havi
by hanniabu 8y ago
You need to let air through or else it creates a vacuum. What's happening is it just slows the flow of air enough to be able to get suction from the fluid. Having fluid in the tube also helps.
- kazinator 8y agoYou need to let air through into the bottle to replace the volume of ejected water. No air should ideally be entering the straw.