Alt TextA screenshot of a post showing a red pickup truck with a mechanical arm structure attached to its bed, holding a magnet in front of a metal plate mounted on the front bumper, titled “Okay explain why this wouldn’t work”. Below, a comment from the official Volkswagen account reads “We sent this to the engineering department and they blocked us on teams.”

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[–] 7 points 5 hours ago (1 child)

Really? No one's posted it yet? Y'all are spending too much time in the mainstreams if this doesn't trigger your anti corpo reflex. ;p

"silence brand" meme showing large crab destroying small crab with its laser eyes

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  • [–] 3 points 7 hours ago (1 child)
  • [–] 17 points 14 hours ago (1 child)

    My tax preparer randomly started telling me about how he's invested money in a guy that is developing a "reactionless space drive" that works basically like this drawing. I was fighting the eye-roll when he added that the guy solved all the problems he was having with the design by asking ChatGPT. I started to explain how ChatGPT works then thought better of it. Easier to just find a new tax preparer.

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  • [–] 1 point 3 hours ago

    There was an actual NASA project that briefly claimed to have detected some miniscule accelerations driven only by EM waves. I think these claims were later lost to measurement error.

    See the wiki:

    NASA Eagleworks reported small thrust under vacuum.[70] Tajmar et al. (2022): no thrust across wide frequency band; any anomalous signal below photon-thrust limit by at least two orders of magnitude.[21]: 31, 42–43 

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  • [–] 3 points 11 hours ago

    The boom is actually a device which attaches the magnets to the ground. The front plate is also a powerful electromagnet which can adjust its own field to be attracted to and then repelled by the spiked, stationary magnets.

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  • [–] 12 points 16 hours ago (1 child)

    It's the right idea. The trick is to also use an electromagnet. A few of them. Put them in a circle. Switch on one of them at a time so the magnet moves to the electro magnet. Then switch of the one electromagnet and switch on the next. Now you have a magnet spinning. Use that to mine the wheels.

    Alternatively have a road full of electromagnetic in a linear fashion. That works too.

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  • [–] 17 points 18 hours ago

    I love that apparently additional metal has to be added because the truck itself is made out of so much plastic and other nonsense that it wouldn't work with a magnet on its own.

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  • [–] 9 points 16 hours ago

    you will get a blindspot, so accidents will happen quite often.

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  • [–] 36 points 21 hours ago* (5 children)

    But how would you stop the car? If you lifted the magnet up, the car goes along with, and then you'd be going through the atmosphere.

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  • [–] 18 points 19 hours ago

    Silence brand

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  • [–] 107 points 1 day ago (5 children)

    The real reason is because the magnet is trying to pull the car. Have you ever tried to pull a car? You'll find it impossible even in neutral. But you'll find out pushing it is much easier.

    You should instead magnetise the shell of the car, then hook to its back a magnet with the same pole as the car's back.

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  • [–] 5 points 20 hours ago (2 children)

    I know you joking bu, isn'tt this how those fancy asian bullet trains work?

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  • [–] 20 points 19 hours ago* (1 child)

    That's magnetic levitation, and it's magnetic repulsion not attraction. The push the train away from the tracks and that balances against the gravity pushing it down onto the tracks, so it levitates. Then you just oscillate the polarity of the electromagnet to move forward.

    It allows for extremely high speed travels since there is no friction with the tracks, but in terms of efficiency it's not much better than a normal electric train. It's just faster, which in commuter trains it is what you want. But it wouldn't be much good for personal vehicle transit, even if we did magnetize all of the roads.

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  • [–] 84 points 1 day ago (1 child)

    As soon as ya figure out pulling yourself up by your boot straps you'll have all the free energy hacks.

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  • [–] 62 points 1 day ago (12 children)

    Switch the magnet for a carrot and the truck for a donkey, it’s way simpler than you tech bros are making it out to be.

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  • [–] 35 points 1 day ago (11 children)

    Neither carrots or donkeys are magnetic 🙄

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  • [–] 19 points 21 hours ago (6 children)

    And yet... there is attraction. I propose, until we've studied it enough to come up with a better name, the "donkey carrot attraction force"

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  • [–] 4 points 18 hours ago (1 child)

    I don't think the carrot is attracted to the donkey the way the donkey is attracted to the carrot...

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  • [–] 2 points 12 hours ago

    Perhaps in a few years, after I've published my paper on Donkey-Carrot-Attraction-Force, you can design an experiment to study the asymmetry of the effect. I look forward to your citations!

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  • [–] 6 points 21 hours ago (2 children)

    Can this attraction be improved upon? Like if the carrot wears some lipstick or some such?

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  • [–] 3 points 16 hours ago (1 child)

    That's clearly an Acme design. It's meant to break.

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  • [–] 11 points 22 hours ago

    I think it's newtons first law. The force attracting the metal to the magnet is equal but opposite to the magnet on the metal.

    Magnet would pull the car backwards and the metal forwards

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  • [–] 19 points 1 day ago (3 children)

    There was a kid at the summer camp I went to who had this idea. I knew it wouldn't work, but I wasn't able to explain why.

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  • [–] 36 points 1 day ago (2 children)

    The magnet also gets pulled backwards with equal force as the plate on the front of the truck gets pulled towards the magnet.

    Since the magnet is attached to the back of the truck, the base of the magnet crane is pushing back on the truck with the same amount of force it’s being pulled forward by by the plate, thus cancelling out the forces and resulting in a net of zero.

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  • [–] 4 points 19 hours ago

    I'm more of an EDM guy, myself

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  • [–] 14 points 1 day ago

    This metal arm compression device would work just fine, that metal arm would experience various stresses. Mission Accomplished. Good design.

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  • [–] 9 points 1 day ago* (2 children)

    I think the reason is that the magnet is also attracted to the metal so the attraction force directions add to be net neutral

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