{"product_id":"the-fountain-effect-plate-065-physics-poster","title":"The Fountain Effect – Plate 065 Physics Poster","description":"\u003cp\u003ePlate 65 speaks for itself: \u003cem\u003e“Heat it, it rises.”\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eThe Physics\u003c\/h3\u003e\u003cp\u003eHeating superfluid helium behind a fine porous plug draws more superfluid in through the plug, and the pressure rise can jet liquid out of the top.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eΔP = ρ s ΔT\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eΔP: fountain pressure, Pa\u003c\/li\u003e\n\u003cli\u003eρ: density, kg m⁻³\u003c\/li\u003e\n\u003cli\u003es: specific entropy, J kg⁻¹ K⁻¹\u003c\/li\u003e\n\u003cli\u003eΔT: temperature difference, K\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHeat draws superfluid in via the plug. The liquid jets out of the top.\u003c\/p\u003e\u003ch3\u003eSources\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJ. F. Allen, H. Jones, Nature 141, 243 (1938).\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eOn the poster\u003c\/h3\u003e\u003cp\u003ePlate 065, “The Fountain Effect”: the pixel-art plate with its slogan “Heat it, it rises.”, the key equation and the facts panel shown above. Pixelated Physics. Physics. Personified.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"9'' x 12\" (Vertical) \/ Matte","offer_id":50962627199079,"sku":"41677662763997904001","price":19.99,"currency_code":"USD","in_stock":true},{"title":"9'' x 12\" (Vertical) \/ Fine Art","offer_id":50962627231847,"sku":"47201594133572931458","price":29.99,"currency_code":"USD","in_stock":true},{"title":"9'' x 12\" (Vertical) \/ Semi Glossy","offer_id":50962627264615,"sku":"26134682098496312122","price":19.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Fine Art","offer_id":50962627297383,"sku":"66746044557487618431","price":44.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Semi Glossy","offer_id":50962627330151,"sku":"18141414120190868113","price":29.99,"currency_code":"USD","in_stock":true},{"title":"18″ x 24″ (Vertical) \/ Matte","offer_id":50962627362919,"sku":"33662289024644235365","price":29.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Matte","offer_id":50962627395687,"sku":"21285247030291613871","price":69.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Fine Art","offer_id":50962627428455,"sku":"20680665647169505695","price":119.99,"currency_code":"USD","in_stock":true},{"title":"36'' x 48\" (Vertical) \/ Semi Glossy","offer_id":50962627461223,"sku":"16537539874669969090","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/2346431431343870321_2048.jpg?v=1793635179","url":"https:\/\/pixelatedphysics.com\/sv\/products\/the-fountain-effect-plate-065-physics-poster","provider":"Pixelated Physics","version":"1.0","type":"link"}