this application is screensaver of moving waterfall wallpaper
you should have enjoyed the beauty of a waterfall. the miky white water pouring down from great heights with fizzing sounds really looks very beautiful and makes a great impact on our inner feelings.it changes our mood and makes us feel happy for getting a chance to see such a beautiful scene. free waterfalls wallpapers. but have you ever wondered why the water white in colour while falling from great heights?? and whats that sound you hear?? read on and you will get the answer we all know water is colourless. even when water is flowing in canals, rivers etc. water appears as usual, sometimes brown if its so muddy. but once it starts falling form a higher place it looks milky white.so something is happening to the water when it starts falling from above.
yes, it happens when water starts falling. in short, the water gets aerated. before explaining this i have to tell you something about dissolved oxygen. free waterfalls wallpapers. as the name says there is some amount of oxygen which is dissolved in the water. this dissolved oxygen is nothing but the small bubbles what you see rising above when you boil water. when the water falls from a height, its flow changes from laminar to turbulent. laminar flow is a kind of uniform and smooth flow.turbulent flow is a rapid and non-uniform flow where all the layers of the water gets mixed. i will give a small example for you to know the difference between laminar and turbulent flow. after you blow off a candle, the smoke (vapour of wax) rises up. free waterfalls wallpapers. the smoke leaving the wick of the candle flows uniformly and smoothly. this is called laminar flow and the flow of smoke little above is non uniform and not smooth. this kind of flow is called turbulent flow. when the flow changes from laminar to turbulent, a sudden change occurs in the parameters of the flow. this causes the dissolved oxygen to evaporate releasing oxygen in the gaseous form and millions of small water bubbles are formed which gives the white colour to the water. air also gets sucked in because of the flow of the water. the hissing sound what you hear is the sound of the air getting mixed with water at the top and again the air gets relieved at the bottom. free waterfalls wallpapers.