That time machine still works, to be fair, just at 1X.
The movie Primer has a very limited time machine that works at -2X. You turn the machine on at, for instance, 2PM, and walk away, coming back in, say, eight hours. You then go into the machine, and you stay in there for eight hours. When you come out of the machine, it is now 2PM, the time when you first turned the machine on. It is a one-way machine; you can only ever use it to go backwards, and you have to go forwards in time the old-fashioned way.
It was made on a budget of $7000 and it’s one of the best sci-fi movies ever made.
Wow, thanks for the great explanation of how the movie works without spoiling it! Will check out!
I honestly do not think it’s even possible to spoil that film lol.
How hard would it be to Dr stone a 120v live outlet?
the dinos would get you first so very.
not if I tell them that eating us will mess with history and cause unpredictable outcomes.
there was an episode where they created a dynamo generator and batteries.
that took them something like six months with many people helping.
unfortunately dynamos(like above) and batteries work on DC current. that time machine works on AC.
so you would need to do two things.
- create a mechanical DC>AC inverter that preferably is powered from the physical input of the dynamo
- create batteries in both series and parallel to ensure a 120v voltage is maintained at the required amperage.
also consider that north American standards require electricity to run at 60hz. this means the AC signal flips the DC signal 60 times per second. creating a mechanical inverter would need to take into account the size of the circle for a complete rotation in 1 second as well as the speed at which the dynamo must spin in order to get 60 alterations per second. the rough formula would look something like:
frequency = speed/(diameter*3.14). speed can be variable depending on the size of the copper wheel used as well.to sum everything up, for just the two people there, it’s probably going to take them too long and they’ll die from exposure or predators.
get excited
someone tried making one of those, barely got any voltage. not enough for a US socket. :(
they probably needed to add more magnets, but that would have made it more difficult to spin. not only, the faster you spin it the more charged the plate becomes and more resistance you’ll feel.
they could use dinos rather than manpower
Dino-mo
I think you underestimate the effort it would take to domesticate something that never had any interaction with intelligent beings.
haven’t you watched any Flintstones?
looks easy
I love that documentary!
unfortunately dynamos(like above) and batteries work on DC current. that time machine works on AC.
That might not be true, a lot of AC powered electronics just convert the input to DC, so if you’re lucky you might be able to use DC. One issue is it probably also has a transformer to reduce the voltage, so you’d need to figure out what voltage it wants after the transformer and bypass it.
Assuming Dr. Stone is some kind of MacGyver regen:
Two obvious approaches to me that I’ll run through in high level: build a wind/watermill generators or potato/lemon batteries
First thing you’ll need to figure out for both is how to make some wire. That’s going to require finding some metal ore and a hot furnace, and creating a few tools out of stone to work with it.
The biggest difficulty with the former two is going to be finding some ferrous metal to turn into magnets. You can make a magnet without electricity by smashing the shit out of some iron as it’s aligned with the earth’s magnetic field, and it’ll become a weak magnet. From there with enough wire, you can build a generator. With the sails of the mill, you can build that out of wood and foliage.
For potato or lemon batteries, you’re going to need a shitload, as they give you about a volt and a pretty tiny current, but theoretically you could figure something out that way with enough. I imagine some things may want to eat your batteries though
Dr. Stone is an anime about humanity being thrust back into the neolithic and a genius kid developing a nation of science to save the world by speedrunning the technology tree.
spoilers
They do exactly what what you mention!
But where in the backstory did every girl on the planet get gene-spliced with a hammerhead shark?
Your lemon batteries will be DC tho. I think step one would be to start carefully dismantling the Time Machine to see what it really needs and what parts might be unneeded and reusable in a generator.
Step 1 then: make tools
how to make some wire. […] finding some ferrous metal to turn into magnets.
These two ingredients put our 120v dynamo really far up the tech tree from “make fire.” Our intrepid time travelers are going to spend years trying to not be velocaraptor food and foraging for a meal themselves, all while making stupendous amounts of charcoal and prospecting for ore.
Oh don’t get me wrong, our intrepid adventurers are going to have to spend a good chunk of time on this with no guarantee they live long enough.
However assuming knowledge isn’t a gap (given they already built a time machine), iron ore is fairly abundant in many areas of the world, and it’s relatively straightforward to build a kiln that would reach the appropriate temperatures to smelt the iron into bloom (that can be hammered into workable iron)
It’ll take many, many years, but assuming they can avoid ending up as food, it doesn’t seem impossible
don’t forget there are dinosaurs. use them for work, probably easier than a water wheel.
What about making a capacitor and charging it with a lightning rod?
Fire
That’s going to depend entirely on how good you are at finding and smelting copper with only Stone Age technologies.
watch Ruri Rocks before time traveling.
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my favourite trope in media, The season long enemy becomes a close ally at the end. And the hero just accumulates friends as if they were Pokémon.
MLP, Dr Stone, Dragon Ball.
need more of that.
No problem. The same people arrive from even later in the future with enough built-in power for both machines and rescue themselves. Everyone returns to their own times. When they arrive back in the earlier time, now they know they have to build another machine with spare power to go rescue themselves.
trash can. remember a trash can.
What I love about that scene is that Bill and Ted are too dumb to know what a paradox is, and how dangerous that can be for a stable timeline. Instead, they just intuit the most useful way to abuse time travel and everything just happens to work out.
It’s the perfect culmination of how they solve all their problems: by being Bill and Ted!
I think my favorite example of this in the first film is when they unintentionally repeat So-crates’ philosophy back to him by quoting Kansas.
Darn. Makes sense…
That’s exactly why the movie was called “Back the the Future”: they had to find a way to get … “back the the future”.
There’s a second time machine in BttF, if I recall correctly. It might be the same time machine, but in the past, I forget tbh
There are 2 time machines. The DeLorean, which gets modified to run on fusion instead of plutonium, and the time train at the very end of BttF 3.
Well… In Back to the Future 2, Marty witnesses the scene from the first movie with the Libyans. He watches himself, in the Delorean, go back in time to escape them.
At that moment in 1985, two Delorean time machines existed: the one that Marty used to return 1985, and the one that he’s watching in the mall parking lot.
Technically, it’s the same time machine I think?
Been years since I’ve watched so this is just from memory.
Travel million of years into the past, you show up in the opposite side of the galaxy were the solar system used to be
Pshaw, merely requires a minor positional adjustment, and of course the entire historical location of every planetary body in the galaxy.
Psssht. That just follows simple mechanics. Two orbiting bodies can be accurately modelled by a high schooler, how hard can a couple more be?
Maybe it’s back in the same spot. I’m feeling lucky.
At least the first colonisation efforts are going to include the users on the front anecdotes.
The fact that it seems to be using a standard two prong plug outlet means it’s incredibly power efficient just bring a jackery with you
More than 90 percent of the power was used to finish dailies in Raid: Shadow Legends 4 and Clash of Clans 10
Damn, now they have to make an alternator to spec without any tools or even raw materials with the knowledge they have in their heads. Time to dig for copper I guess… whoops no shovels either…
Just need to find Benjamin Franklin to charge your patented Super Battery, and wash your carriage to ensure precipitation!
Maybe carry some future battery’s next time
Every ‘science bro’ american futurist.
What a fucking paradox. How the fuck did they get out if it wasn’t even powered on?
You wouldn’t happen to drive a Tesla would you?
Ew. Disgusting
Exploring time travel reveals that backward travel to any point before a machine is constructed is theoretically prohibited, whether framed by the universe’s need to avoid paradoxes (such as Stephen Hawking’s Chronology Protection Conjecture) or by simple physical geometry (like the Earth’s movement through the galaxy)
You… you know how doors work… right?
So the machine can still go through time with no electricity needed for the exit? Would the doors not be powered by electricity?
Exploring time travel reveals that backward travel to any point before a machine is constructed is theoretically prohibited, whether framed by the universe’s need to avoid paradoxes (such as Stephen Hawking’s Chronology Protection Conjecture) or by simple physical geometry (like the Earth’s movement through the galaxy)
Probably had a battery or something
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But with an internal battery, they could get home
We don’t know how much energy time travel uses so it might have proven insufficient
If it had to connect to the power grid it’s a lot of energy.
