Interesting Videos (How do you Crush cans with Water!)

How do you crush Cans with water? Everyone wants to know the answer to this question and i am sure all of you will be surprised at how simple, efficient and low-cost, So after watching the video and the explanation, if any of you guys want to try it, you can submit your videos of the experiments here and i will put it on this blog! Have fun watching the video below!

So, was the video cool? The man heated the can up and then submerged it into a can of cold water and the can simultaneously crackled and crushed by itself! Now, i will proceed to giving the explanation for this reaction. This is simply due to something called Charles law. So what is Charles law? A modern statement of Charles law would be-At constant pressure, the volume of a given mass of an ideal gas increases or decreases by the same factor as its temperature on the absolute temperature scale (i.e. the gas expands as the temperature increases) A more simple way of saying would be- As the temperature of something increases, its density would decrease. What is happening here in the video is that when the water boils, it actually forces all the air out of the can and when the can was quickly cooled in the bucket of ice water, it causes all the water vapour to condense which makes it vacuum inside the can, which means the air pressure outside of the can is stronger than the outside, and the can collapses on itself. The air pressure outside the can is simply too huge and forces the can to crush. I can compare this similarly to that of a submarine, when it goes too deep into teh water and exceeds its underwater depth limit, the airpressure outside is far too much stronger than the air pressure inside the submarine and pushes against the submarine's walls, forcing the metal to have a cracking sound. However, a submarine struction is designed to withstand such huge pressure, thus, it would not crush. Similarly, i can compare that to an airplane, there are many cases of airplanes breaking open resulting in severe decompression, similarly, the airpressure outside the plane when it is flying at an altitude of 30000 metres is very much stronger thant he air pressure inside the airplane, resulting in a severe decompression when any part of the airplne breaks off, regardless of whether it is the ceiling, floorboard or windows. Just a small crack will allow the air outside to rush in at a ery high speed and the air inside to rush out, pushing at each other. As for the metal can, when it is heated, the water will evaporate and the water vapour will rise, however as the can is covered, the vapour cannot escape, when the can is suddenly cooled, the water  vapour will condense suddenly and causes it to vacuum inside the can. One more contributing factor is that the air pressure outside the can overcomes the pressure inside and crushes it. I conclude my explanation here and please continue scouring my blog for more interesting articles and videos. This post covers two topics- Charles Law and severe decompression. As i end my post here, i just want to post a video regarding airplane severe decompression when some part of the airplane was blown off. Have fun watching!

This video is long-52 minutes, however, it is a very interesting reconstruction of the real scenario. 9 people were blown off, but amazingly, the plane manage to land at Honolulu.