this post was submitted on 20 Aug 2025
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Science Memes

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top 23 comments
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[–] Technus@lemmy.zip 49 points 1 week ago (1 children)

We used to make these all the time as kids. You need a second pair of magnets in push configuration on the back for this to work.

[–] fartographer@lemmy.world 20 points 1 week ago (1 children)

Don't forget the spark plug wrapped in wire that's been taped to a light bulb

[–] bryndos@fedia.io 13 points 1 week ago (1 children)

With the right electric field you can generate (a small amount of) thrust our of ions in air flowing over a charged plane.

One of the myth-busters "anti-gravity" devices they tested was actually (very weak) a static electric ion thruster.

Pretty cool - but it did need electric power input.

[–] NatakuNox@lemmy.world 4 points 1 week ago (1 children)

What about the 4 magnets on the sides for turning!?

[–] Eh_I@lemmy.world 4 points 1 week ago

You're going to need a three-way monopole electromagnet if you ever want to reverse.

[–] Codpiece@feddit.uk 41 points 1 week ago* (last edited 1 week ago) (1 children)

You need a stronger magnet at the front obviously.

Or it’s a toy American truck and they’re metric magnets. Swap them for federal units.

[–] jaybone@lemmy.zip 13 points 1 week ago (1 children)

Water destroys magnets. Thank you for your attention to this important matter.

[–] Whats_your_reasoning@lemmy.world 4 points 1 week ago (1 children)

Well duh. Why else would the magnetic record on the sea floor flip back and forth?

[–] MagicShel@lemmy.zip 6 points 1 week ago (1 children)

So you can hear the 'B' side.

[–] shittydwarf@sh.itjust.works 38 points 1 week ago

You gotta release the parking brake

[–] SapphironZA@sh.itjust.works 31 points 1 week ago

The handbrake is still on.

[–] Peanutbjelly@sopuli.xyz 16 points 1 week ago

Just gotta pull yourself up by your bootstraps and figure out out like i did.

[–] nexguy@lemmy.world 15 points 1 week ago

I think it is working. Exactly as designed.

[–] ShaggySnacks@lemmy.myserv.one 10 points 1 week ago

Fucking magnets, how do they work?

[–] Eh_I@lemmy.world 6 points 1 week ago (1 children)
[–] ExtremeUnicorn@feddit.org 2 points 1 week ago

You're pointing to my colleague?

[–] cmgvd3lw@discuss.tchncs.de 6 points 1 week ago

You have too pee on the truck bed

[–] j4k3@lemmy.world 5 points 1 week ago

missing microwave transformer, HHO electrolysis, cellulose, and nitric acid bro... obviously

[–] darklamer@lemmy.dbzer0.com 4 points 1 week ago (1 children)

The magnet dislikes you personally, that's why.

[–] humorlessrepost@lemmy.world 5 points 1 week ago* (last edited 1 week ago)

Far too many people think this is how “energy” and “frequencies” work.

[–] knacht1@lemmy.world 3 points 1 week ago

It used to work till you broke it.

[–] apotheotic@beehaw.org 2 points 1 week ago

Rookie mistake, the thing holding the magnet from the back side is also metal so it cancels out