The ink does not fall out of the dropper beacause
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When ink is sucked into a dropper, the pressure surrounding it is lower than the atmospheric pressure outside the dropper. Liquids cannot flow from low pressure to high pressure. Thus, it cannot flow to out of the dropper and remains inside without dropping.
To get the ink out of the dropper, extra pressure has to be applied that is more than the atmospheric pressure. You have to press the dropper at the top to create the extra pressure.
To get the ink out of the dropper, extra pressure has to be applied that is more than the atmospheric pressure. You have to press the dropper at the top to create the extra pressure.
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Well the simplest reason is because of "pressure difference" .
Ink in the dropper when sucked a pressure difference creates there the surrounding area pressure of the ink become low than the outside atmospheric pressure and because a liquid can't go to a high pressure area from a low pressure area itself so the ink does not flows out . but you can get ink out by applying the extra pressure from outside.
Hope this helps,
Ink in the dropper when sucked a pressure difference creates there the surrounding area pressure of the ink become low than the outside atmospheric pressure and because a liquid can't go to a high pressure area from a low pressure area itself so the ink does not flows out . but you can get ink out by applying the extra pressure from outside.
Hope this helps,
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