What occurs when the air inside a flask, one-fourth full of water and having a set rubber cork pierced by by an extended glass tube whose decrease finish is mendacity sunken within the water, is heated?
Take a flask manufactured from skinny glass and fill one-fourth of it with water. Repair a rubber or cork-stopper tightly on its mouth with a glass tube passing by the stopper. Ensure that the decrease a part of the tube stays immersed within the water. All of the joints of the flask should stay hermetic or else you will not achieve your experiment. Now, rub each of your arms collectively and place them on that a part of the flask which is above the water-level. Subsequent, place a bit of fabric heated within the solar on the flask. What do you see? The water rises up within the tube each the occasions by itself.
Are you able to perceive why it so occurs? In truth, as you could have guessed accurately, the warmth of your arms and the piece of fabric trigger growth of the air within the bottle. This in flip exerts stress on the water and the stress thus triggered forces some water to stand up within the tube.
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