Line #52 Main/FrictionBurn


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5	[[quoteright:350:[[WesternAnimation/RogerRabbitShorts https://static.tvtropes.org/pmwiki/pub/images/roller_coaster_rabbit.png]]]]
6	[[caption-width-right:350:[[VideoGame/WiiFit That's it! Feel the burn!]]]]
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11	Ever rub your hands together and notice that they warm up? That's friction, the force resisting the relative motion of solid surfaces, fluid layers, and/or material elements sliding against each other. Friction creates heat which can create a small flame if on a dry surface.
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13	In fiction however, particularly animation, friction can cause one to [[IncendiaryExponent burst into flames]]. This is usually PlayedForLaughs and is often caused by a character's own [[TooDumbToLive stupidity]]. In superhero fiction, characters with SuperStrength might do this. One of the RequiredSecondaryPowers of characters with SuperSpeed must be dedicated to avoid this. This trope may also be in effect when someone is using a FingerSnapLighter, or when BurningRubber.
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15	Compare PlayingWithFire, when this trope is weaponized; and BurningRubber, when friction burn leaves burning trails along the ground. Contrast FrictionlessReentry, which is the opposite of this trope. Related to SpaceFriction.
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17	----
18	!!Examples
19	[[foldercontrol]]
20
21	[[folder:Anime and Manga]]
22
23	* In ''Literature/BakaAndTestSummonTheBeasts'', [[LovableSexManiac Kouta]] is always trying to take pictures of the girls, always searching for a glorious PantyShot. When he senses the opportunity to get a shot from Mizuki, he starts sliding all around her on the floor, trying to get the perfect angle. He sets himself on fire from the friction, then douses himself with his own blood from the {{Nosebleed}} that followed afterward.
24	* Invoked in ''Manga/BattleAngelAlita''. In her previous life, Alita had been sentenced to death by Atmospheric Exposure - meaning she was tossed out an airlock in a decaying orbit to burn up in reentry.
25	* In ''Literature/{{Durarara}}'': Mikado Ryugamine uses the internet so epically that his [[http://i726.photobucket.com/albums/ww262/CapZiggy/vlcsnap-2010-03-15-22h18m45s103.png mouse catches on fire]] from the friction.
26	* ''Manga/FairyTail'': The [[GoldfishPoopGang Jiggle Butt Gang]] escape from the Zentopia dungeons by using this to light their asses on fire... ItMakesJustAsMuchSenseInContext.
27	* In the finale of ''Anime/KillLaKill'', [[spoiler:Senketsu performs a HeroicSacrifice by shielding Ryuko from the heat of reentry using his own body and burns up in the process.]]
28	* ''Manga/MegaManMegamix'': Shadow Man kills [[spoiler:Neptune]] by using him as a HumanShield against atmospheric reentry, letting his enemy get burned up by the friction whilst shielding himself. He tries to do it to Mercury too, but Mercury uses his melting powers to protect himself from the heat and escape.
29	* ''Anime/MobileSuitGundam'' has an early battle wherein, while the Federation ship ''White Base'' prepares to enter Earth's atmosphere, a squad of Zeon mobile suits, led by Char, attempts to ambush them while they are defenseless. Amuro sorties in the Gundam and fends them off, with Char's squad also attempting to stall the Gundam from making it back to ''White Base'' in the hopes of forcing it to burn up in the atmosphere. Unfortunately for them, the Gundam was designed to be able to enter the Earth's atmosphere. One of Char's squadmates also falls into the atmosphere trying to take out the Gundam, with the pilot powerless to stop his fall, and Char unable to do anything for him but give his condolences to the pilot before his Zaku is destroyed.
30	* ''Manga/OnePiece'':
31	** This is how Sanji activates his ''Diable Jambe'' technique: by spinning in place at such a high speed the leg he's spinning on ignites.
32	** Also, this is supposedly how Hannyabal activates his ''Hannya Carnival, Blazing Hell Wheel'' attack.
33	* Invoked in ''Manga/RozenMaiden'' whenever Micchan gets a bout of CutenessProximity dressing up Kanaria and rubs her cheeks against hers. Worse for Kanaria, since, being a doll, she's made of quite flammable material and while she never actually bursts into flames, it's clearly not comfortable for her.
34	[[/folder]]
35
36	[[folder:Comic Books]]
37	* Discussed in ''ComicBook/{{Superman}}'' story arc ''ComicBook/ThePlagueOfTheAntibioticMan''. As battling an enemy in space, Superman comes up with the idea of encasing him in a prison fashioned from a meteorite. But he needs heat to melt the quartz into reflective glass, and there is no air-friction in space, so he uses his heat vision.
38	* ''ComicBook/{{Static}}'' villain Hotstreak possesses the ability to absorb the heat that is produced by his SuperSpeed and release it as powerful fire blasts.
39	* Discussed in ''ComicBook/SonicTheComic'' which, like in other media, has Sonic having special foot ware to eliminate the issue of friction when he runs. In this continuity they were given to him by the kindly Professor Ovi Kintobor before he was [[TheCorruption corrupted by Chaos Energy]] and transformed in to the evil Dr. Ivo Robotnik.
40	* ''ComicBook/TheFlash'' and other speedsters from the [[Franchise/TheDCU DC Comics universe]] are [[RequiredSecondaryPowers protected from friction burn by an aura from the Speedforce that envelopes them & anyone they carry when they run]]. However they can will this aura away to set people or items they are carrying alight.
41	[[/folder]]
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43	[[folder:Fan Works]]
44	* In ''Fanfic/HellsisterTrilogy'', ComicBook/{{Supergirl}}'s super-speed when she flies out of the planet causes the air to burst into flames around her. Being invulnerable, she ignores the effect.
45	-->The air friction formed a corona of fire around her as she streaked invisibly through the skies. She ignored it.
46	* In ''Fanfic/HereThereBeMonsters'', the air around [[ComicBook/{{Shazam}} Captain Marvel, Jr.]] flares up briefly when he rushes towards Mister Atom and Red Crusher at super-speed.
47	-->Junior sighed in relief, then set his jaw and flew downward like a meteor. His pace was so rapid that the aura of air friction was visible about him, briefly. He lanced downward towards the Menace of Metal, fists outstretched for a double hammer-blow.
48	[[/folder]]
49
50	[[folder:Films -- Live-Action]]
51	* ''Film/Apollo13'': When the crew is preparing to reenter Earth's atmosphere, the possibility of reentry friction incinerating them in the atmosphere becomes an OhCrap moment.
52	--> '''Captain Jim Lovell:''' ''[Inspecting the jettisoned Service Module]'' "One whole side of the spacecraft is missing. Right by the high gain antenna, a whole panel is blown out. Right up...right up to our heat shield."
53	* ''Film/IndianaJonesAndTheTempleOfDoom'': When the minecart's brake handle ends up busted, Indy tries to stop it by grinding the wheels with his feet before they hit the dead end. He barely makes it, but the friction leaves his shoes burning up and smoking.
54	* ''Film/Pinocchio2022Disney'': During the puppet show, Pinocchio dances so fast that his feet catch fire, causing Stromboli to douse him with a bucket of water. Later, when he and Geppetto and trapped inside Monstro, [[ChekhovsGag Pinocchio rubs his feet together]] to light the fire that will make the monster sneeze them out.
55	[[/folder]]
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57	[[folder:Video Games]]
58	* In the final mission of ''VideoGame/{{Battletech}}'', TheDragon's SpheroidDropship is sabotaged on approach to the planet and enters a uncontrolled descent, cooking the insides and killing everyone aboard. While the ship was able to break enough that it avoids just bursting mid-air, the ensuing burning wreck quickly [[StuffBlowingUp makes an uncontrolled landing]] since it no longer has any living crew.
59	* As in real life, ''VideoGame/KerbalSpaceProgram'' applies reentry friction to a vessel entering the atmosphere at orbital speeds. Heat shields are available for capsules and other craft, while spaceplane parts naturally resist heating. Proper flying technique is also required in order to gain the maximum protection from any shielding. Craft can and ''will'' overheat and explode catastrophically if improperly entered and/or insufficiently protected.
60	* ''VideoGame/MonsterHunter'': Glavenus can ignite its massive sword-like tail by dragging it against the ground.
61	* ''VideoGame/Tekken8'' has the stage "Into the Stratosphere", which takes place on a meteor careening towards the Earth. Flames can be seen surrounding the stage's parameter while smaller chunks of rock can be seen breaking off and burning up in the atmosphere. When the battle reaches a match point, the heat intensifies to the point of the stage becoming molten in some spots.
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64	[[folder:Web Comics]]
65	* ''WebComic/{{Irrelevator}}'': [[http://i.imgur.com/7Ra7yxQ.gif Happens to the Red guy. ]]
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68	[[folder:Western Animation]]
69	* ''WesternAnimation/AdventuresOfSonicTheHedgehog'': In "[[Recap/AdventuresOfSonicTheHedgehogS01E019TheMysteryOfTheMissingHiTops The Mystery of the Missing Hi-tops]]", when Sonic's signature shoes are stolen, he tries running without them and burns his feet after a few seconds, explaining that they were specially designed to protect him from that.
70	* In an episode of ''WesternAnimation/ThePowerpuffGirls1998'', Buttercup created a fireball by rubbing her hands together rapidly and threw it at a monster.
71	* In an episode of ''WesternAnimation/FamilyGuy'', Peter drank Red Bull, giving him a rush of energy, and then milked a cow so rapidly, its udder burst into flames. In the same scene Chris, who also drank Red Bull, was seen running around screaming, pantsless, and with his groin ablaze.
72	* ''WesternAnimation/TheAmazingWorldOfGumball'' gives us an example where Gumball is trying to start a fire through the friction & stick method. He ends up setting his hands on fire, and while he's running around screaming in pain, the wood he was trying to ignite catches on fire a few moments later. CueTheRain.
73	** He also caught on fire from air friction when going down a hill too fast, while the friction with the ground tore the bike apart.
74	* In ''WesternAnimation/DextersLaboratory'', when Dexter uses a TimeDilation device to go through his whole daily routine in 1 minute, he accidentally lights his homework on fire from the friction (and called it by the trope name at that). He needed to go through the same physics he has affected to counter this.
75	* In ''Westernanimation/TheMask'', once the Mask slows down a falling plane with his feet (as he stands in front of the aircraft's nose), he goes "Smoking"... as smoke is emerging from his shoes and he starts jumping in pain yelling "Hot, hot, hot!"
76	* In ''WesternAnimation/TheProudFamily'', "Poetic Justice", Oscar sets his hand on fire while trying to snap. A few seconds prior, [[OnlySaneMan PeaBo]] [[LampshadeHanging warned him about trying to snap too quickly, as that, combined with the "ashy-ness of his skin" could cause "spontaneous combustion".]]
77	** Similar, while in the middle of a MachoDisasterExpedition he remember how his mother always said his ankles were so ashy they could start a fire, so he tries it--and it works!
78	* On the WesternAnimation/RogerRabbitShort "Roller Coaster Rabbit", Roger's feet catch fire while skidding down a roller coaster track.
79	* On the short-lived superhero spoof series ''WesternAnimation/TheRippingFriends'', the main characters accidentally make Frictor, a malevolent friction ''elemental''. He can cause friction burns strong enough to disintegrate anything (or any''one'') in his way, though Frictor mainly uses his control over friction for [[PokeThePoodle dumb pranks]].
80	* ''WesternAnimation/StevenUniverse'': One thing Peridot finds out about Jasper while trying to prove that the latter is inferior to Amethyst is that she melted the rock around her when she [[BornAsAnAdult emerged]].
81	* ''WesternAnimation/IAmWeasel'': In "The Magnificent Motorbikini", Baboon forgets to put brakes on the titular vehicle, so he tries to stop it "the old-fashioned way" with his feet, which end up bursting into flame.
82	* ''WesternAnimation/MiddlemostPost'': When Angus slides down the pole of the crow's nest, the friction causes it to go on fire.
83	* One episode of ''WesternAnimation/{{Doug}}'' involves a school-wide athletic contest. Doug is pretty good at the rope climb, but loses his grip and slips down from the top, badly burning his hands. They're wrapped entirely in bandages, leaving him unable to do much else, only to get inspired by the phrase 'sitting around' to enter the sit-up contest. He wins, but then [[TheAhnold Ronald Weisenheimer]] congratulates him by [[CrushingHandshake shaking his hand.]]
84	[[/folder]]
85
86	[[folder:Real Life]]
87	* Ever wonder what those black tiles on the bottom of the [[SpacePlane Space Shuttle Orbiter]] were? Those are special heat-resistant ceramic tiles designed to protect the astronauts and vehicle. After all, this trope is played ''deadly'' straight when moving through Earth's atmosphere at orbital velocities. This protection requirement applies to every single reentry vehicle in the entire history of spaceflight, as temperatures [[https://en.wikipedia.org/wiki/Galileo_probe may reach]] more than twice the ones of the Sun's surface. However, much of that temperature comes from atmospheric compression, not friction.
88	* A straighter example comes from classic fire-starting techniques, wherein two pieces of dry wood are dubbed together at high speed, usually using a string and brace, to raise heat enough that the wood combusts.
89	* BBC Science Focus magazine ran an article titled "[[https://www.sciencefocus.com/science/the-thought-experiment-how-fast-would-i-have-to-run-to-catch-fire/ The thought experiment: How fast would I have to run to catch fire?]]" that stated that aircraft research from NASA reveals that you’d need to be running at Mach 5 (6,000km/h / 3,728.2 mph) to reach the temperature that a human body is usually cremated at (1,500°C / just over 2,730°F). However as Nylon will catch fire at about 500°C / 932°F and wool will ignite at 230°C / 446°F you could trot along at a "leisurely" 2,500km/h (1,553.4 mph) and still burst into flames unless you were naked.
90	[[/folder]]
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Context Main / FrictionBurn