When we dip an ink dropper into a bottle of ink,the ink does not rise up into the dropper. However,when we dip the dropper into the ink and squeeze the rubber cap,air bubbles can be seen coming out of the dropper. When we release the cap(stop squeezing),the ink rises into the dropper.
The reason the ink rises into the dropper is due to a principle called Pascal's law,which states that when pressure is applied to a fluid(in this case,the ink),it is transmitted equally in all directions.
i hope this helps u..
