Convection, Schmonvection: Difference between revisions

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{{trope}}
[[File:convection 1368.jpg|link=The Simpsons (animation)|rightframe]]
 
{{quote|''"Fire--as long as you're not directly touching it, it can't hurt you."''|'''Mike Nelson''', ''[[The Last Airbender]]'' [[Riff Trax]]}}
|'''Mike Nelson''', ''[[The Last Airbender]]'' [[Riff Trax]]}}
 
Lava: primal force, essence of destruction that leaves behind fertile land; ''really, '''really''' hot''.
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== Real Life ==
* Kids are familiar with this trope from a very early age. They will often pretend that the floor is "hot lava," the point of the game being to move around the room without touching the floor. This game is familiar enough to have been referenced on an early ''[[Grounded for Life]]'' and a vacation episode of ''[[The Simpsons (animation)|The Simpsons]]'' as well as the nudist episode of ''[[Family Guy]]'', an episode of ''[[RWBY Chibi]]'', and a mission in a Tony Hawk game.
** [http://xkcd.com/735/ This] ''[[Xkcd]]'' comic sums it up well.
** There is even [https://en.wikipedia.org/wiki/Floor_Is_Lava a game show] on [[Netflix]] based on it.
* Subverted a bit by [http://youtube.com/watch?v=4b6n8riJaFo the Discovery Channel].
* In older aluminum plants, the metal is still poured partly by employees who work very close to 1300-1700 °F aluminum - often as close as a foot or less distance between the worker and the aluminum. Dross is skimmed from the tops of crucibles and molds with hand-held metal skimmers. The workers wear heavy cotton gloves, double cotton sleeves and aluminized aprons to do this. While it is not the most comfortable job in the world, the protective gear does not singe or burn unless in direct contact with the metal, and the cotton is not fire retardant.
** Further, the most important bit of safety gear: a sort of awning over the tops of your boots. Molten Aluminum can run down denim, barely scorching it (ironically, its convection acts on the water vapor to act as a temporary "force- field"), but bad things happen if it gets in your boots and it can't flow anywhere else.
*** Kind of brings a whole new layer of meaning to "flares", that does:)
* Played pretty darn straight by the experience of Heimaey, Iceland, in the Vestmannaeyjar islands. In 1973, a nearby mountain erupted, sending, literally, acres of lava towards the town - and, from the inhabitants' perspective, more importantly, the harbor. In a desperate attempt to save the harbor from being filled by lava, the inhabitants, the government of Iceland, and, eventually, even the U.S. Navy, started pouring water directly on the lava to try and solidify the leading edge, hopefully sending the remaining lava ''somewhere else''. This took weeks, if not months, and for most of that time, not only were people walking directly on top of the lava, they were separated from actual liquid rock by, at times, ''nothing but ash'', but they were running hoses along it, and even driving ''bulldozers'' around on top of it. The treads of the bulldozers blued from the heat over time, and the soles of boots tended to melt when people stood, but for a significant amount of time, people were not only running near lava, they were working on top of it for twenty-hour-a-day stretches. Icelanders are hardcore.