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Other movies that violate conservation of mass?


I'm writing a term paper about movie scenes that defy a chosen law of physics, but I need a scene from at least two more films. If anybody can help, can you please list a few? Hopefully, it's one or two that I have watched already.

And if you can, please point out at least one or two scenes I can analyze, detail, and use as an example.

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Just about every superhero movie does it to some extent. Mystique changes sizes a lot in the X-Men movies. The Hulk changes size in any movie he's in as well. Even the Sam Raimi Spider-man movies have Spider-man leaving hundreds of pounds of webbing he supposedly generated biologically around the city every time he goes anywhere.

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Well, I'm way late to help you for your term paper I'm pretty sure, sorry, just read this today, but just for fun, because I've been awake for a bit over 48 hours at this point and I'm wacky from sleep deprivation, there are definite instances of violations of conservation of mass that happen in Terminator 2 and 3, when it comes to the T-1000 and the T-X model terminators specifically.

The T-1000 (the liquid metal terminator,) chooses a base form in the cop it models itself after, played by Robert Patrick, who is 1.83 meters tall. The T-1000 always returns to it's base form, but it mimics John Connor's foster mom at one point, played by Jenette Goldstein, who is 1.6 meters tall. It would make sense that a liquid metal terminator could mimic someone taller than it's base form, it could just create a hollow cavity within itself, stretching it's matter out a bit, but it wouldn't make sense that it could mimic someone shorter than it's base form, because that would mean it would have to shed some matter.

The exact same thing happens in Terminator 3, but it makes even less sense this time around, because the T-X (played by Kristanna Loken, 1.8 meters tall, and holy sh!t is she hot,) is liquid metal over an endoskeleton, which leaves even less room to conceivably be able to "compress" it's liquid metal outer sheath to mimic someone shorter, yet that's exactly what it ends up doing when it mimics Kate's fiance Scott who is played by Mark Famiglietti. If Mark were taller than Kristanna, no problem, but he's actually shorter by a bit, 1.75 meters tall.

Uh... I really hope you weren't counting on getting answers here for your term paper. If so, sorry I couldna be of more help.

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Great points but it's also entirely possible that both terminators left room to shrink if necessary. Their base forms may not be the smallest possible form they can take - in fact, the films show that it's not. That or they might (thinking of the T-1000 and John's foster mother) have some mass sort of take part of the floor or something. We see the T-1000 pull metal back in after it's shattered so no reason it couldn't just leave a little metal behind under the counter or something until it can re-assimilate it to go back to it's base form.



Reading my signature constitutes admission that I am correct. (Too late)

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It's possible, but it's never directly explained, so arguing about it in any fashion would be a little silly. My examples could violate the conservation of mass, so that's probably good enough for a hypothetical thought exercise.

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Totally agree. Just pointing out that it's not *confirmed* that there's an issue.

Just lots of open questions.

Reading my signature constitutes admission that I am correct. (Too late)

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So, Ant Man at his normal height might weigh 160 pounds in the gravity of Earth, and he has a certain number of atoms. If he shrinks down to an eighth of an inch tall, he will still have the same number of atoms, all of which will have shrunk proportionately, and he should still weigh 160 pounds. Matter has not been removed to make him smaller. And if he were to expand to be 100 feet tall, he would still weigh 160 pounds, because all of the atoms would be expanding proportionately, but matter would not be being added to make him larger. The same would apply to the tank or any other object being shrunk or enlarged.

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