Bernoulli's Principle
Daniel Bernoulli (1700 - 1782), Swiss physicist, stated a principle about fluids (liquids or gases) in motion. Today this is known as Bernoulli's principle. In simple terms it states that where the speed of a fluid is high, the pressure is low and where the speed of a fluid is low, the pressure is high. For example, the air above the liquid inside the perfume sprayer shown below is at rest and the air that passes through the horizontal tube on the top of the sprayer moves fairly fast when the rubber bulb is squeezed briskly. Thus, the pressure above the liquid inside the lower bottle is relatively high compared to the pressure directly above the vertical tube. This pressure difference causes the perfume to be pushed up into the horizontal air stream and out the nozzle. Some air paint sprayers and garden-hose chemical sprayers work in much the same way as the perfume sprayer.
Bernoulli's PrincipleDaniel Bernoulli (1700 - 1782), Swiss physicist, stated a principle about fluids (liquids or gases) in motion. Today this is known as Bernoulli's principle. In simple terms it states that where the speed of a fluid is high, the pressure is low and where the speed of a fluid is low, the pressure is high. For example, the air above the liquid inside the perfume sprayer shown below is at rest and the air that passes through the horizontal tube on the top of the sprayer moves fairly fast when the rubber bulb is squeezed briskly. Thus, the pressure above the liquid inside the lower bottle is relatively high compared to the pressure directly above the vertical tube. This pressure difference causes the perfume to be pushed up into the horizontal air stream and out the nozzle. Some air paint sprayers and garden-hose chemical sprayers work in much the same way as the perfume sprayer.
การแปล กรุณารอสักครู่..
