A bottle-like fountain used to spray deodorants to remove odors or odors is called an aerosol spray. Press the button on the top cap of the bottle and the liquid sprays out of the hole in the side. Aerosol sprays are not the same as regular sprays. Aerosol bottles are only half filled with liquid. The remaining void is filled with high pressure air. Air pressure is about 50 kg. A tube connected to the lid is submerged in the liquid. As soon as a finger is pressed on the lid, the valve in it opens and the liquid comes out with great velocity due to the tremendous air pressure. And a shower comes out of the hole. This shower contains more air than liquid. So the fountain looks like a transparent cloud.
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