Editing 969: Delta-P
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==Explanation== | ==Explanation== | ||
− | + | {{w|The Lion, the Witch and the Wardrobe}} is a book in which four children accidentally wander into a world known as {{w|Narnia}} through a wardrobe that only allows passage through to Narnia when you aren't looking for it. In the comic, someone connects an anchor to the wardrobe and throws it into the ocean. The formula describes the flow of water through the open doors, which means that a steady stream of water at an approximate velocity of 200 meters per second will flow into Narnia. | |
The evil {{w|White Witch}}, who has made it [http://www.goodreads.com/quotes/93155-always-winter-but-never-christmas "always winter, and never Christmas,"] could not have anticipated that a wardrobe portal would suddenly begin spewing approximately 400,000 liters of water per second into Narnia.{{Citation needed}} | The evil {{w|White Witch}}, who has made it [http://www.goodreads.com/quotes/93155-always-winter-but-never-christmas "always winter, and never Christmas,"] could not have anticipated that a wardrobe portal would suddenly begin spewing approximately 400,000 liters of water per second into Narnia.{{Citation needed}} | ||
− | Sea water freezes at low temperatures and flowing water freezes at even lower temperatures, depending how fast it is going. Water jetting out from this portal would be flowing very quickly indeed, approximately 200 meters per second (450 mph | + | Sea water freezes at low temperatures and flowing water freezes at even lower temperatures, depending how fast it is going. Water jetting out from this portal would be flowing very quickly indeed, approximately 200 meters per second (450 mph/720 kph) as the comic says; this is over half the speed of sound. And the water flow is approximately 400,000 liters per second, again, provided in the image above. The force of this water jet would be incredible. If you can imagine the force of a tractor trailer truck careening down the highway, the force of this jet is much much larger than that. |
− | This water would not freeze. First it would | + | This water would not freeze. First it would decimate any forest trees or iron lamp post in front of it until it eventually slowed down and fell to the ground. There it would create a rapidly expanding river of sea water. Narnia would not stay frozen for long. Snow would melt, ice would break apart and the valley would quickly flood. |
− | Delta-P is a mathematical | + | Delta-P is a mathematical expression for the difference in pressure. Here the difference is between the depths of the ocean and the open air of a forest that creates the flow of water. |
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− | The title text references the video game | + | The title text references the video game {{w|Portal (video game)|Portal}} in which you solve puzzles using a gun which projects portals onto certain surfaces. In the game you cannot shoot a portal through a portal, but [[Randall]] says that if you try to create a portal with the portal gun through the wardrobe, space and time knot together. {{w|Aslan}}, the lion in the title, was [http://www.rapidnet.com/~jbeard/bdm/exposes/lewis/cs-lewis.htm written by Lewis to be an actual representation] (scroll to the section "Is Narnia an allegory?") of {{w|Jesus Christ}}. The {{w|Characters in the Portal series#Personality Cores|Space Core}} is a Personality Core from {{w|Portal 2}} that doesn't care about anything but [http://www.youtube.com/watch?v=BVn1oQL9sWg wanting to go to space]. |
− | + | This is a classic [[xkcd]] based on the intersection of literature, math and video games. | |
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==Transcript== | ==Transcript== | ||
:[An open wardrobe, with a boat anchor attached to one corner, falling towards water.] | :[An open wardrobe, with a boat anchor attached to one corner, falling towards water.] | ||
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:Q = A * sqrt(2 * g * d) | :Q = A * sqrt(2 * g * d) | ||
:Q = flow rate | :Q = flow rate | ||
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:g = Earth gravity | :g = Earth gravity | ||
− | + | :Flow: ~400,000 <sup>liters</sup>/s | |
− | :Flow: ~400,000 <sup>liters</sup>/ | + | :Water jet velocity: ~200 <sup>m</sup>/s |
− | :Water jet velocity: ~200 <sup>m</sup>/ | ||
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:The White Witch didn't know what hit her. | :The White Witch didn't know what hit her. | ||
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[[Category:Video games]] | [[Category:Video games]] | ||
[[Category:Fiction]] | [[Category:Fiction]] | ||
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