History Main / SelectiveMagnetism

24th Feb '17 5:13:00 PM Ghilz
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-->-- ''Rifftrax: Indiana Jones and the Kingdom of the Crystal Skull''

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-->-- ''Rifftrax: ''Podcast/RiffTrax: Indiana Jones and the Kingdom of the Crystal Skull''
20th Feb '17 9:05:29 AM 64SuperNintendo
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[[folder: Web Comic]]

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[[folder: Web Comic]]Comics]]
5th Feb '17 3:27:20 AM danya02
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Magnetism is a physical principle can be used to add some [[RuleOfCool awesome]] or some [[RuleOfFunny comedic relief]] to a story. But often in fiction the needs of the plot can outweigh the desire for consistency, and SelectiveMagnetism can set in. This occurs when magnetism is used within a work, but its portrayal is inconsistent within the universe of the story.

SelectiveMagnetism can manifest itself in a few different ways:

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Magnetism is a physical principle can be used to add some [[RuleOfCool awesome]] or some [[RuleOfFunny comedic relief]] to a story. But often in fiction the needs of the plot can outweigh the desire for consistency, and SelectiveMagnetism Selective Magnetism can set in. This occurs when magnetism is used within a work, but its portrayal is inconsistent within the universe of the story.

SelectiveMagnetism Selective Magnetism can manifest itself in a few different ways:
23rd Nov '16 12:58:04 AM Morgenthaler
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* Referenced in ''{{Simon The Sorcerer}}'', where [[spoiler:to steal a dragon's hoard, Simon uses a magnet and a piece of string to collect it from above, one coin at a time. Once you've collected the whole hoard, Simon himself quips about how it shouldn't work, but did.]]

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* Referenced in ''{{Simon ''VideoGame/{{Simon The Sorcerer}}'', where [[spoiler:to steal a dragon's hoard, Simon uses a magnet and a piece of string to collect it from above, one coin at a time. Once you've collected the whole hoard, Simon himself quips about how it shouldn't work, but did.]]
17th Nov '16 1:05:56 PM nombretomado
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* ''{{Kinnikuman}}''. Dream Tag Tournament's tag team of Neptuneman and Big the Budo and their spammy Magnet Power. More powerful displays DO attract any and all nearby metal... but they all seem to go towards the designated target, rather than the origin, where the force is at its strongest.

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* ''{{Kinnikuman}}''.''Manga/{{Kinnikuman}}''. Dream Tag Tournament's tag team of Neptuneman and Big the Budo and their spammy Magnet Power. More powerful displays DO attract any and all nearby metal... but they all seem to go towards the designated target, rather than the origin, where the force is at its strongest.
11th Jul '16 2:08:04 PM MrFrensley
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-> ''"Magnets only do what they need to do for the purposes of the plot. That's what ''Franchise/XMen'' taught me."''
-->-- A LetsPlay [[ChipCheezum of]] ''[[http://www.viddler.com/explore/ChipCheezum/videos/4/ Beyond Good and Evil]]''

Powerful magnets are cool. Generally, it's a lot easier in cartoons and TV shows to create a magnet that is powerful enough to rip the gun out of your hands than it is in real life. But the real catcher isn't how much it attracts, but ''what'' it attracts. And, by extension, what it ''doesn't'' attract.

Often magnets are selective about what they attract, only pulling in the obviously metal stuff, while ignoring other items that ''should'' be attracted. Or else pulling things in one at a time, instead of everything at once.

Can be TruthInTelevision, as only three common metals are ferromagnetic: iron, nickel, and cobalt. Metals like gold, aluminium, and others, despite being slightly responsive to magnetic fields (a property known as [[http://en.wikipedia.org/wiki/Paramagnetism paramagnetism]]), are by and large not affected by magnets. Writers are often unaware of that fact.

Oh yes, and that stainless steel dagger I'm holding? [[http://www.physlink.com/education/askexperts/ae546.cfm You can't have it]].

The iron in human blood is locked up in molecules, and thus no longer ferromagnetic: no dice there. ''Water'' has a molecular dipole, where one end of the molecule is slightly negative and the other is slightly positive, to the point where a really strong field can [[http://www.ru.nl/hfml/research/levitation/diamagnetic/ levitate a frog]]. [[JustThinkOfThePotential But no one ever considers that aspect, either]].

A subtrope of YouFailPhysicsForever unless [[MagnetismManipulation it's an explicit superpower]], and a SisterTrope to HollywoodMagnetism.

to:

-> ''"Magnets only do what they need to do for the purposes of the plot. That's what ''Franchise/XMen'' taught me."''
-->-- A LetsPlay [[ChipCheezum of]] ''[[http://www.viddler.com/explore/ChipCheezum/videos/4/ Beyond
->'''Kevin:''' Good and Evil]]''

Powerful magnets are cool. Generally, it's a lot easier in cartoons and TV shows to create a magnet that is powerful enough to rip the gun out
thing their guns aren't made of your hands than it is in real life. But the real catcher steel.\\
'''Mike:''' Good thing our jeep
isn't how much magnetic. Oh wait, it attracts, is.\\
'''Kevin:''' It's the Law of Selective Magnetism. It only works when things look cool or funny.
-->-- ''Rifftrax: Indiana Jones and the Kingdom of the Crystal Skull''

Magnetism is a physical principle can be used to add some [[RuleOfCool awesome]] or some [[RuleOfFunny comedic relief]] to a story. But often in fiction the needs of the plot can outweigh the desire for consistency, and SelectiveMagnetism can set in. This occurs when magnetism is used within a work,
but ''what'' it attracts. And, its portrayal is inconsistent within the universe of the story.

SelectiveMagnetism can manifest itself in a few different ways:
* Objects that are (or will be) attracted
by extension, what it ''doesn't'' attract.

Often
magnets show no effect until the (previously hidden) magnet is revealed. (Also works in reverse; the magnet is seen but does not attract an object until the object is revealed.)
* Some objects
are attracted by the magnet, but other objects that are clearly the same substance are never attracted.
* A magnet attracts an object, an irritated character pulls the object away as if to say "no" to a naughty child, and the magnet no longer attracts the object.
* The magnet just seems to turn on or off in an unpredictable way.

Allowing magnetism to be
selective about what they attract, only pulling in is usually necessary because applying the obviously metal stuff, while ignoring other items that ''should'' be attracted. Or else pulling things behavior of magnetism consistently within a story or even within the same scene may destroy the joke, deaden the dramatic impact, require the addition of too much detail, or prevent the characters from progressing the plot. Done well, and the audience maintains its WillingSuspensionOfDisbelief despite the inconsistency. Done poorly, and the work will allow a community of physics nerds (if done really badly, non-nerds) to criticize the work in one at a time, instead of everything at once.

forums for eternity.

Can be TruthInTelevision, as only three common metals are ferromagnetic: iron, ferromagnetic (iron, nickel, and cobalt. Metals like gold, aluminium, cobalt) and others, despite being slightly responsive to magnetic fields (a property known as [[http://en.wikipedia.org/wiki/Paramagnetism paramagnetism]]), are by and large not only these metals can be magnetized or strongly affected by magnets. other magnets. Magnetism can also be established by an electric current (electromagnetism), which can be turned on or off. Writers are often unaware usually show an awareness of that fact.

Oh yes, and that stainless steel dagger I'm holding? [[http://www.physlink.com/education/askexperts/ae546.cfm You can't have it]].

The iron in human blood is locked up in molecules, and thus no longer ferromagnetic: no dice there. ''Water'' has a molecular dipole, where one end of the molecule is slightly negative and the other is slightly positive, to the point where a really strong field can [[http://www.ru.nl/hfml/research/levitation/diamagnetic/ levitate a frog]]. [[JustThinkOfThePotential But no one ever considers that aspect, either]].

electromagnetism, but not ferromagnetism.

A subtrope of YouFailPhysicsForever unless [[MagnetismManipulation it's an explicit superpower]], YouFailPhysicsForever. Often overlaps with HollywoodMagnetism and sometimes MagnetismManipulation, but there are distinct differences:
* MagnetismManipulation occurs when
a SisterTrope character in the work can choose how magnetism works and this is set forth explicitly as a special ability.
* HollywoodMagnetism occurs when the work clearly portrays magnetism differently than RealLife.
* SelectiveMagnetism occurs when the force of magnetism is inconsistently portrayed even within the universe of the work.
Please make sure that your example of magnetism as used in fiction goes
to HollywoodMagnetism.
the right trope.
10th Jul '16 9:24:52 PM TheNicestGuy
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Added DiffLines:

* In the episode "Love-Bheits" of ''WesternAnimation/TheVentureBrothers'', the trope is averted for a laugh. Baron Ünderbheit, who has a metal mandible and bulky metal armor, uses an "atomic supermagnet" to bring down Dr. Venture's plane as it flies near his realm. Although the scheme does work, the Baron himself flies up to stick to the device's business end the moment it is switched on.
2nd Jul '16 10:29:50 AM nombretomado
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* In an episode of ''OneThousandWaysToDie'', a criminal holds a Hot Nurse hostage in an MRI chamber, demanding certain favors from her. As she start to comply and he is DistractedByTheSexy, she is able to switch on the machine, which rips the gun out of his hand. Unfortunately for him, he also has a metal plate in his skull. It doesn't end well, for him (uh, remember the show's name?).

to:

* In an episode of ''OneThousandWaysToDie'', ''Series/OneThousandWaysToDie'', a criminal holds a Hot Nurse hostage in an MRI chamber, demanding certain favors from her. As she start to comply and he is DistractedByTheSexy, she is able to switch on the machine, which rips the gun out of his hand. Unfortunately for him, he also has a metal plate in his skull. It doesn't end well, for him (uh, remember the show's name?).



* The Magnetism element in ''{{Bionicle}}''.

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* The Magnetism element in ''{{Bionicle}}''.''Toys/{{Bionicle}}''.
28th May '16 1:23:04 AM Heckfire
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Added DiffLines:

* ComicBook/CaptainAmerica briefly used to use magnets in his gloves back in the 60s to control the trajectory of his shield throwing without effecting anything else in the way.
15th May '16 11:17:15 AM nombretomado
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* {{Magneto}}. Scientists also promptly said his powers wouldn't work that well due to the Third Law of Motion - to every action there is an equal and opposite reaction, thus while lifting a battleship weighting tens of thousands of tons the mutant would also be attracted to it like a fridge magnet...

to:

* {{Magneto}}.ComicBook/{{Magneto}}. Scientists also promptly said his powers wouldn't work that well due to the Third Law of Motion - to every action there is an equal and opposite reaction, thus while lifting a battleship weighting tens of thousands of tons the mutant would also be attracted to it like a fridge magnet...
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