How can a dropper use Bernoulli's effect?

A dropper can use Bernoulli's effect by understanding that as the velocity of a fluid increases, its pressure decreases. This principle can be applied in various ways, such as controlling the flow rate of a liquid by adjusting the velocity of the dropper or creating a vacuum effect to draw liquid up into the dropper. By manipulating the velocity and pressure of the fluid, a dropper can effectively dispense or collect liquids with precision and control.

A dropper uses Bernoulli's effect to draw liquid into the tube. When you squeeze the bulb of the dropper, you decrease the air pressure inside the bulb. This creates a pressure difference between the inside and outside of the bulb, which causes air to flow into the bulb. The air flowing into the bulb creates a Venturi effect, which draws liquid up into the tube.

Bernoulli's effect is also used to create a vacuum inside the bulb of the dropper. When you release the bulb, the air pressure inside the bulb increases. This causes air to flow out of the bulb, creating a vacuum. The vacuum draws liquid up into the tube until the pressure inside the bulb is equal to the pressure outside the bulb.