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Comic books are our modern mythology. We await with baited breath the donnybrook also known as Batman v Superman, though we don't yet know why the "Super Friends" start their inevitable bromance with a grudge match. Avengers: Age of Ultron answered who else was "worthy" enough - Vision - to lift Thor's hammer - forged in the heart of a dying star, which kind of suggests a Brown Dwarf or White Dwarf, meaning nothing in the universe worthy or not should be able to lift a teaspoon of Mjolnir (except apparently, a nail on the wall of Dr. Jane Foster's apartment in "Dark World" - seriously, look again). Technically, Vision came to life from it, so a one-armed curl shouldn't be past his AI abilities. Of course, there are others who lift "the smasher" - including the Hulk, who heretofore couldn't no matter how mad he got!
Currently in vogue on television are series like Agents of Shield (with the exception of enhanced humans and demigods, pretty terrestrial in its physics); Arrow (essentially, Batman with a bow); Gotham (that is so dark, it's a wonder Bruce Wayne or Jim Gordon WANT to stay there); and of course the breakout hit, the societal, self double entrendre: The Flash.
The series ended (spoiler alert) with a lot of cockeyed physics, like running at twice the speed of sound, colliding with a single proton in an accelerator and opening a wormhole so his nemesis - The Reverse Flash (a really pissed-off psychopath that comes back to create The Flash to KILL him - ahem: keep up), so he could go home. Home in this case, the 25th Century, bypassing Kirk and Picard's paltry epochs by two centuries where they apparently have time travel, but no cows for hamburgers, if Rev is to be "believed." The cliffhanger was Barry doing the heroes sacrifice of running into a black hole opening above Central City - that in real world physics would have killed most of the population with its radiation and ground the Earth into hamburger meat, Flash included. Ray Bradbury would be proud of the echo from his "A Sound of Thunder," an apocryphal foundation for time travel stories since its inception.
Of course, it's all hokey fun. Doing a serious and somewhat tongue-in-cheek search on the actual physics of superluminal (i.e. faster than light speed travel) resulted an interesting paper and related article [1, 3]; some humorous posts [2, 4], also tongue-in-cheek funny. Humor is always a good hook for STEM lectures and teenagers.
I enjoy the shows just like anyone else. For any story line to sell its audience, there is the usual suspension of belief in the verisimilitude of the fictional world and its "laws of cartoon physics." Alas, poor Yorick - our laws are binding. Even the Batman - my favorite, since he was for me the most believable - can't escape the laws we're subject to on a daily basis - like all of us mere mortals subject to Entropy, he wears out too. Life without magic is kind of a drag, but there's still much wonder in reality.
For any of these shows, I become that kid on 25th and Cleveland Avenue in Winston-Salem, NC that used to enjoy a nerdy Saturday with my best friend - trading and reading comic books, something sadly I don't think kids do much of anymore. I'm trying not to be the sour physics guy pointing out every impossibility in a movie or TV series - as I've gotten older, I'm better in large groups at keeping my mouth shut.
1. Physics arXiv: How superluminal motion can lead to backward time travel
Robert J. Nemiro and David M. Russelly
2. Geek: Quantum physics just solved one of the great paradoxes of time travel, Graham Templeton
3. Scientific American: Time Travel Simulation Resolves “Grandfather Paradox”, Lee Billings
4. PBS News Hour: Spider-Math and Bat-Physics: Science in a Superhero World, Rebecca Jacobson
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