Agricultural sprayer uses what physics knowledge

Agricultural sprayer is in the same liquid, high velocity, low pressure; velocity of small, high pressure. The fluid will automatically flow from the high pressure low pressure. In the low agricultural sprayers  flow through a three-way tube, flow to the high speed of the flow of air. The water is of high speed air to tear into droplets of a droplet (ideas out of the water, the tap water was just beginning to slow, gradually increasing the speed of; but later becomes a drop of a drop). These small water droplets sprayed out after a fog. High speed flow obstacles after splitting into small droplets of principle of second kinds of use is to put water into the tube backpack weed sprayer  by high velocity flow, high velocity flow obstacles after splitting into principle of small water droplets. The situation like a faucet after fingers blocked. Agricultural sprayer use of the structure, the cost is low. Centrifugal force principle of liquid thrown out of third is a high-speed rotating liquid atomizing disk will be thrown by centrifugal force, tear into small droplets similar to an umbrella rotation when the situation of ultrasonic Trigger Sprayer  principle of fourth is the principle of ultrasonic atomizer. Vibration can cause "waves" in the water, the ultrasonic vibration frequency is very high, so it's "wave" of the wavelength is very small, so its "spray" -- the small droplets are very small, these small water droplets into the mist.