{"product_id":"can-air-stop-water-exploring-pressure-in-fluids","title":"Can Air Stop Water? — Exploring Pressure in Fluids","description":"\u003ch3 dir=\"auto\" data-start=\"1063\" data-end=\"1095\" class=\"PDq2pG_selectionAnchorContainer\"\u003eTake a bottle filled with water.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1097\" data-end=\"1131\"\u003eMake a small hole near its bottom.\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1133\" data-end=\"1150\"\u003eWater rushes out.\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1152\" data-end=\"1173\"\u003eNow close the bottle.\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1175\" data-end=\"1191\"\u003eThe water stops.\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1193\" data-end=\"1222\"\u003eNothing has blocked the hole.\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1224\" data-end=\"1250\"\u003eSo what stopped the water?\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1252\" data-end=\"1313\"\u003eThe answer leads us into the invisible world of pressure.\u003c\/h3\u003e\n\u003ch3 dir=\"auto\" data-start=\"1315\" data-end=\"1406\"\u003eAnd when we make a second hole, the bottle begins to behave in an even more surprising way.\u003c\/h3\u003e\n\u003ch1 data-section-id=\"94xwd5\" dir=\"auto\" data-start=\"1413\" data-end=\"1438\" class=\"PDq2pG_selectionAnchorContainer\"\u003ePart 1 — The First Hole\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"1440\" data-end=\"1515\"\u003eA cylindrical bottle was provided with a small hole near its lower portion.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1517\" data-end=\"1561\"\u003eThe hole was initially covered with a thumb.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1563\" data-end=\"1622\"\u003eThe bottle was filled with water and the cap was left open.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1624\" data-end=\"1688\"\u003eWhen the thumb was removed, water immediately began to gush out.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1690\" data-end=\"1711\"\u003eThis is unsurprising.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1713\" data-end=\"1822\"\u003eThere is water above the hole, and gravity produces a pressure within the water that drives the flow outward.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1824\" data-end=\"1859\"\u003eBut now comes the interesting part.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1861\" data-end=\"1883\"\u003eThe bottle was capped.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1885\" data-end=\"1911\"\u003eThe water stopped flowing.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1913\" data-end=\"1937\"\u003eThe hole was still open.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1939\" data-end=\"1974\"\u003eNothing was physically blocking it.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1976\" data-end=\"2037\"\u003eThe cap had somehow changed the conditions inside the bottle.\u003c\/p\u003e\n\u003ch1 data-section-id=\"1ssvj9s\" dir=\"auto\" data-start=\"2044\" data-end=\"2060\" class=\"PDq2pG_selectionAnchorContainer\"\u003eWhat Happened?\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"2062\" data-end=\"2151\"\u003eWhen water leaves a completely sealed bottle, the volume occupied by the water decreases.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2153\" data-end=\"2193\"\u003eThe trapped air above the water expands.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2195\" data-end=\"2238\"\u003eAs the air expands, its pressure decreases.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2240\" data-end=\"2384\"\u003eEventually, the pressure conditions inside the bottle can reach a state where the pressure difference driving water through the hole disappears.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2386\" data-end=\"2400\"\u003eAt that point:\u003c\/p\u003e\n\u003cblockquote data-start=\"2402\" data-end=\"2498\"\u003e\n\u003cp dir=\"auto\" data-start=\"2404\" data-end=\"2498\"\u003e\u003cstrong data-start=\"2404\" data-end=\"2498\"\u003eAtmospheric pressure outside the hole balances the pressure acting from inside the bottle.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"2500\" data-end=\"2570\"\u003eThere is no longer a net pressure difference to drive continuous flow.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2572\" data-end=\"2588\"\u003eThe water stops.\u003c\/p\u003e\n\u003ch1 data-section-id=\"dsrqhc\" dir=\"auto\" data-start=\"2595\" data-end=\"2623\" class=\"PDq2pG_selectionAnchorContainer\"\u003ePart 2 — Make Another Hole\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"2625\" data-end=\"2674\"\u003eNow the experiment becomes much more interesting.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2676\" data-end=\"2728\"\u003eA second hole was made slightly above the first one.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2730\" data-end=\"2763\"\u003eThe bottle was filled with water.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2765\" data-end=\"2825\"\u003eWith the bottle uncapped, water emerged from \u003cstrong data-start=\"2810\" data-end=\"2824\"\u003eboth holes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2827\" data-end=\"2862\"\u003eBut the streams were not identical.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2864\" data-end=\"2913\"\u003eThe stream from the lower hole travelled farther.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2915\" data-end=\"2975\"\u003eThe stream from the upper hole travelled a shorter distance.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2977\" data-end=\"3003\"\u003eThis immediately suggests:\u003c\/p\u003e\n\u003cblockquote data-start=\"3005\" data-end=\"3072\"\u003e\n\u003cp dir=\"auto\" data-start=\"3007\" data-end=\"3072\"\u003e\u003cstrong data-start=\"3007\" data-end=\"3072\"\u003eThe water is leaving the two holes with different velocities.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"3074\" data-end=\"3078\"\u003eWhy?\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3080\" data-end=\"3145\"\u003eBecause the pressure inside the water is not the same everywhere.\u003c\/p\u003e\n\u003ch1 data-section-id=\"fba7ut\" dir=\"auto\" data-start=\"3152\" data-end=\"3171\" class=\"PDq2pG_selectionAnchorContainer\"\u003ePressure Gradient\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"3173\" data-end=\"3275\"\u003eThe deeper the hole is below the water surface, the greater the hydrostatic pressure at that location.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3277\" data-end=\"3335\"\u003eFor a stationary fluid, the pressure increases with depth.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3510\" data-end=\"3520\"\u003e \u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3522\" data-end=\"3579\"\u003e\u003cstrong data-start=\"3522\" data-end=\"3579\"\u003eLower hole → greater pressure → greater outflow speed\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3581\" data-end=\"3584\"\u003eand\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3586\" data-end=\"3644\"\u003e\u003cstrong data-start=\"3586\" data-end=\"3644\"\u003eUpper hole → smaller pressure → smaller outflow speed.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3646\" data-end=\"3786\"\u003eThe different trajectories of the two streams therefore provide a visible demonstration of a pressure gradient that cannot be seen directly.\u003c\/p\u003e\n\u003ch1 data-section-id=\"1lxhtmz\" dir=\"auto\" data-start=\"3793\" data-end=\"3823\" class=\"PDq2pG_selectionAnchorContainer\"\u003ePart 3 — Close the Cap Again\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"3825\" data-end=\"3868\"\u003eNow comes the really beautiful observation.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3870\" data-end=\"3923\"\u003eThe bottle was capped while both holes remained open.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3925\" data-end=\"3943\"\u003eOne might predict:\u003c\/p\u003e\n\u003cblockquote data-start=\"3945\" data-end=\"3976\"\u003e\n\u003cp dir=\"auto\" data-start=\"3947\" data-end=\"3976\"\u003e\u003cstrong data-start=\"3947\" data-end=\"3976\"\u003eBoth streams should stop.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"3978\" data-end=\"4008\"\u003eBut that is not what happened.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4010\" data-end=\"4060\"\u003eWater continued to emerge from the \u003cstrong data-start=\"4045\" data-end=\"4059\"\u003elower hole\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4062\" data-end=\"4128\"\u003eAt the same time, something unexpected happened at the upper hole:\u003c\/p\u003e\n\u003cblockquote data-start=\"4130\" data-end=\"4200\"\u003e\n\u003cp dir=\"auto\" data-start=\"4132\" data-end=\"4200\"\u003e\u003cstrong data-start=\"4132\" data-end=\"4200\"\u003eAir began entering the bottle through the upper hole as bubbles.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch1 data-section-id=\"1wyz9or\" dir=\"auto\" data-start=\"4280\" data-end=\"4300\" class=\"PDq2pG_selectionAnchorContainer\"\u003eWhat Is Happening?\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"4302\" data-end=\"4407\"\u003eOnce the bottle is capped, water leaving the lower hole causes the trapped air above the water to expand.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4409\" data-end=\"4432\"\u003eIts pressure decreases.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4434\" data-end=\"4535\"\u003eInitially, this reduced pressure may become comparable to the atmospheric pressure at the upper hole.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4537\" data-end=\"4653\"\u003eBut water can still escape through the lower hole because the pressure there is greater due to the additional depth.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4655\" data-end=\"4729\"\u003eAs water continues leaving, the pressure of the trapped air falls further.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4731\" data-end=\"4831\"\u003eEventually, the pressure inside near the upper hole becomes lower than atmospheric pressure outside.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4833\" data-end=\"4892\"\u003eAtmospheric air can therefore enter through the upper hole.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4894\" data-end=\"4921\"\u003eYou get a remarkable cycle:\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4923\" data-end=\"4961\"\u003e\u003cstrong data-start=\"4923\" data-end=\"4961\"\u003eWater exits through the lower hole\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4963\" data-end=\"4964\"\u003e↓\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4966\" data-end=\"4995\"\u003e\u003cstrong data-start=\"4966\" data-end=\"4995\"\u003ePressure inside decreases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"4997\" data-end=\"4998\"\u003e↓\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5000\" data-end=\"5037\"\u003e\u003cstrong data-start=\"5000\" data-end=\"5037\"\u003eAir enters through the upper hole\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5039\" data-end=\"5040\"\u003e↓\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5042\" data-end=\"5080\"\u003e\u003cstrong data-start=\"5042\" data-end=\"5080\"\u003eThe pressure is partially restored\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5082\" data-end=\"5083\"\u003e↓\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5085\" data-end=\"5115\"\u003e\u003cstrong data-start=\"5085\" data-end=\"5115\"\u003eWater can continue leaving\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5117\" data-end=\"5165\"\u003eThis is why you see the characteristic bubbling.\u003c\/p\u003e\n\u003ch1 data-section-id=\"1p16dh4\" dir=\"auto\" data-start=\"5172\" data-end=\"5194\" class=\"PDq2pG_selectionAnchorContainer\"\u003eA Beautiful Question\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cblockquote data-start=\"5237\" data-end=\"5346\"\u003e\n\u003cp dir=\"auto\" data-start=\"5239\" data-end=\"5346\"\u003e\u003cstrong data-start=\"5239\" data-end=\"5346\"\u003eWhy does air enter through the upper hole while water is simultaneously leaving through the lower hole?\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"5348\" data-end=\"5437\"\u003eThe answer forces us to stop thinking of \"pressure inside the bottle\" as a single number.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5439\" data-end=\"5489\"\u003eThere is a \u003cstrong data-start=\"5450\" data-end=\"5488\"\u003epressure gradient within the water\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5491\" data-end=\"5573\"\u003eThe pressure at the lower hole can be greater than the pressure at the upper hole.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5575\" data-end=\"5642\"\u003eThat difference allows two different flows to occur simultaneously.\u003c\/p\u003e\n\u003ch1 data-section-id=\"1mz1vol\" dir=\"auto\" data-start=\"5649\" data-end=\"5694\" class=\"PDq2pG_selectionAnchorContainer\"\u003ePart 4 — What If the Hole Is at the Bottom?\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"5743\" data-end=\"5803\"\u003eSuppose we make the only hole at the \u003cstrong data-start=\"5780\" data-end=\"5802\"\u003ebase of the bottle\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5805\" data-end=\"5819\"\u003eClose the cap.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5821\" data-end=\"5872\"\u003eThere is no upper hole through which air can enter.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5874\" data-end=\"5901\"\u003eOne might initially expect:\u003c\/p\u003e\n\u003cblockquote data-start=\"5903\" data-end=\"5972\"\u003e\n\u003cp dir=\"auto\" data-start=\"5905\" data-end=\"5972\"\u003e\u003cstrong data-start=\"5905\" data-end=\"5972\"\u003eWater should still fall out because gravity is acting downward.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"5974\" data-end=\"6022\"\u003eBut experimentally, the water can remain inside.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6024\" data-end=\"6028\"\u003eWhy?\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6030\" data-end=\"6114\"\u003eBecause gravity does not by itself determine whether water flows through an opening.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6116\" data-end=\"6179\"\u003eFlow depends on the \u003cstrong data-start=\"6136\" data-end=\"6178\"\u003epressure difference across the opening\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6181\" data-end=\"6307\"\u003eThe pressure at the hole inside the bottle is determined by the pressure of the trapped air plus the hydrostatic contribution.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6309\" data-end=\"6384\"\u003eThe atmospheric pressure outside pushes upward on the water at the opening.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6386\" data-end=\"6446\"\u003eUnder the appropriate conditions, these effects can balance.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6448\" data-end=\"6490\"\u003eSo even though gravity is acting downward:\u003c\/p\u003e\n\u003cblockquote data-start=\"6492\" data-end=\"6561\"\u003e\n\u003cp dir=\"auto\" data-start=\"6494\" data-end=\"6561\"\u003e\u003cstrong data-start=\"6494\" data-end=\"6561\"\u003eThere is no net force driving continuous flow through the hole.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"6563\" data-end=\"6675\"\u003eThis is a very useful correction to the intuitive idea that \"water must come out because gravity pulls it down.\"\u003c\/p\u003e\n\u003ch1 data-section-id=\"gxyrmc\" dir=\"auto\" data-start=\"6682\" data-end=\"6701\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe Deeper Lesson\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"6703\" data-end=\"6767\"\u003eThis experiment demonstrates something fundamental about fluids:\u003c\/p\u003e\n\u003cblockquote data-start=\"6769\" data-end=\"6911\"\u003e\n\u003cp dir=\"auto\" data-start=\"6771\" data-end=\"6911\"\u003e\u003cstrong data-start=\"6771\" data-end=\"6911\"\u003eA fluid does not flow simply because gravity acts on it. It flows when there is an appropriate pressure gradient or pressure difference.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp dir=\"auto\" data-start=\"6913\" data-end=\"6960\"\u003eGravity creates a pressure gradient in a fluid.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"6962\" data-end=\"7062\"\u003eBut other sources of pressure—such as trapped air and atmospheric pressure—can oppose or balance it.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"7064\" data-end=\"7104\"\u003eThis is why the same bottle can exhibit:\u003c\/p\u003e\n\u003cul data-start=\"7106\" data-end=\"7205\"\u003e\n\u003cli data-section-id=\"njf6ev\" data-start=\"7106\" data-end=\"7123\"\u003eContinuous flow\u003c\/li\u003e\n\u003cli data-section-id=\"gnlzi3\" data-start=\"7124\" data-end=\"7133\"\u003eNo flow\u003c\/li\u003e\n\u003cli data-section-id=\"v348jq\" data-start=\"7134\" data-end=\"7181\"\u003eTwo simultaneous flows in opposite directions\u003c\/li\u003e\n\u003cli data-section-id=\"mpstjg\" data-start=\"7182\" data-end=\"7205\"\u003eIntermittent bubbling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\" data-start=\"7207\" data-end=\"7258\"\u003esimply by changing the arrangement of its openings.\u003c\/p\u003e\n\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003eContinue the Investigation\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe experiment you've just explored is only the beginning. Our hands-on investigation sets are designed to help you recreate, extend, and deepen these ideas through observation and experimentation.\u003c\/p\u003e\n\u003cp\u003eEvery investigation has the potential to lead to a new question. If you discover something interesting, improve the experiment, or develop a new variation, share it with the Geometers community. Your work may inspire others and could even be featured here.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKeep experimenting. Keep questioning. Keep discovering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Geometers","offers":[{"title":"Default Title","offer_id":50540635947144,"sku":null,"price":499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3891\/4952\/files\/Snapshot28-09-202612-09.png?v=1790587426","url":"https:\/\/geometers.in\/products\/can-air-stop-water-exploring-pressure-in-fluids","provider":"Geometers","version":"1.0","type":"link"}