, owing to theweight of this water, the mercury inside the tube will be slightly belowthat outside. 138 HEAT. [CH. IX The level of the mercury in this arm is below that in EG.The water and mercury completely fill EG. The tube AEpasses through a cork closing a flask. The flask containswater which… … Fig. 53. After the water has been boiling for some time the tem-perature of the water in the tube EG rises to 100° C. and thepi-essure of the vapour formed there forces the mercury downGE and up EA until it stands at the same level in the twoarms. Thus the pressure of the vapour in EG is equal to…
Heat · Light
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