892

https://xkcd.com/2929

Alt text:

While it seemed like a fun prank at the time, I realize my prank fire extinguishers full of leaded gasoline were a mistake.

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[-] Wild_Mastic@lemmy.world 91 points 6 months ago* (last edited 6 months ago)

So, about Project Orion from Wikipedia

In August 1955, Ulam co-authored a classified paper proposing the use of nuclear fission bombs, "ejected and detonated at a considerable distance," for propelling a vehicle in outer space.

Excuse me what the fuck

[-] Cethin@lemmy.zip 53 points 6 months ago

All chemical propulsion is just controlled explosions that we use to push a thing forward. It's not that different, as long as you don't use it in the atmosphere or near humans.

[-] Wild_Mastic@lemmy.world 12 points 6 months ago

Yeah I know, it's the same principle behind modern fuel engines. Still, using nukes for propelling something forward is a bit of a stretch.

[-] notabot@lemm.ee 18 points 6 months ago

Not just nukes, but nuclear shaped charges, at a rate of maybe one per second for a manned vehicle or even more for a faster cargo only mission.

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[-] jol@discuss.tchncs.de 27 points 6 months ago

Ah the 50s, when everything atomic was rad.

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[-] SonnyVabitch@lemmy.world 19 points 6 months ago

It's not uncommon in scifi. Netflix's Three Body Problem also explores such a solution in quite some depth.

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[-] frezik@midwest.social 13 points 6 months ago

It would probably work just fine, but it needs a huge ship. It could get up to a few percent of the speed of light.

FWIW, nuclear test ban treaties are considered to outlaw it. I think we're more likely to solve the technical difficulties of antimatter propulsion than we are to get over the political difficulties of nuclear bomb propulsion.

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[-] ours@lemmy.world 12 points 6 months ago

Read "Footfall" for a hard scifi story featuring such a ship.

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[-] Drusenija@lemmy.world 58 points 6 months ago

So soup sounds like an idea and is actually an idea. Checks out.

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[-] Assman@sh.itjust.works 40 points 6 months ago

What is this transition lense slander

[-] Evotech@lemmy.world 34 points 6 months ago* (last edited 6 months ago)

I know right, I recently replaced my glasses with transition lenses and it's pretty nice.

Who doesn't want automated sunglasses? Not seeing any downsides yet. Only thing I know they don't work in cars, but I don't generally drive so it's ok

The technology has come a long way since the 90s

[-] wizardbeard@lemmy.dbzer0.com 17 points 6 months ago

I find that they don't "un-tint" when going inside fast enough for my liking, personally.

Creates kind of the opposite effect of going from a dim room into a bright space. Instead of evrything seeming extra bright, it just dimmed everything and made it more difficult to see.

[-] twice_twotimes@sh.itjust.works 14 points 6 months ago

One problem my mom did not anticipate was that she would be stuck effectively wearing sunglasses for my brother’s outdoor wedding, where was sitting up with the bride and groom for the whole thing (Indian wedding). She just looked like an asshole, and continues to look like an asshole in the just about every photo of the ceremony. Oops.

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[-] surewhynotlem@lemmy.world 12 points 6 months ago

In the cold they take too long to transition to clear. So you end up taking them off for a few seconds when you go inside. It's only minorly annoying.

[-] rockerface@lemm.ee 12 points 6 months ago

To be fair, regular glasses mist up anyway when going inside from the cold, so you take them off anyway

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[-] FMT99@lemmy.world 33 points 6 months ago

I was under the impression that bloodletting could in some cases actually be beneficial.

[-] Mostly_Gristle@lemmy.world 33 points 6 months ago

Yeah, for people with hemochromatosis (too much iron in the blood) the main treatment is still bloodletting.

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[-] FireTower@lemmy.world 15 points 6 months ago* (last edited 6 months ago)

Yeah, it's still practiced. But the whole four humors thing is a bit old hat.

I think there's a few of these misplaced. Heelys>transition lens.

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[-] MonkderDritte@feddit.de 26 points 6 months ago

Excuse me, what about pizza in squares?

[-] tacosplease@lemmy.world 28 points 6 months ago

I guess because there is no crust to grab. Gotta get grease and maybe sauce on your hands to eat the inner squares.

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[-] Hadriscus@lemm.ee 23 points 6 months ago

oh lord that alt text

[-] De_Narm@lemmy.world 23 points 6 months ago

I think sliced bread is overrated as fuck. It used to be nice back when people couldn't just buy knives for cheap, but nowadays it just means getting stale bread faster.

[-] tiredofsametab@kbin.run 19 points 6 months ago

For some types of bread, the machine can do it much more uniformly and without crushing. This can be difficult for humans.

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[-] pineapplelover@lemm.ee 20 points 6 months ago

What's wrong with Transitions lenses. I like mine

[-] BearOfaTime@lemm.ee 15 points 6 months ago* (last edited 6 months ago)

Transitions are game changing. Sounds like someone who doesn't wear glasses all the time. I even had transition sunglasses before I needed glasses - got tired of taking them off going in/out all day.

Not sure who created this (I kkow, XKCD), but it's mediocre.

Double-ended extension cords belongs in the top ~~left~~ right corner. Sounds bad and is bad.

[-] AdrianTheFrog@lemmy.world 10 points 6 months ago

Double-ended extension cords belongs in the top left right corner. Sounds bad and is bad.

Remember, you’re probably more technical than the average person. Double ended extension chords sound fine if you haven’t heard of them before until you think about it for five seconds.

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[-] yamanii@lemmy.world 18 points 6 months ago

Every single glasses of mine have had transition lenses, I can't imagine my life without them anymore.

[-] Death_Equity@lemmy.world 9 points 6 months ago

I love transitions lenses. I have transitions contacts and they are fantastic.

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[-] MonkderDritte@feddit.de 14 points 6 months ago* (last edited 6 months ago)

Replying to spammers sound like a good idea at first, should be top left.

[-] witty_username@feddit.nl 13 points 6 months ago* (last edited 6 months ago)

I don't get the diverging diamond interchanges one

[-] Lux 24 points 6 months ago

Diverging diamond interchanges are a type of road intersection that appears very chaotic from the outside, but are actually pretty simple and safe to navigate

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[-] Gieselbrecht@feddit.de 13 points 6 months ago

Pizza is way too right and too high on this graph.

[-] UnderpantsWeevil@lemmy.world 13 points 6 months ago

One of the cooler parts of Three Body Problem was when they attempted the Orion Project to accelerate a probe to 1% of light speed.

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[-] randomaccount43543@lemmy.world 12 points 6 months ago
[-] samus12345@lemmy.world 12 points 6 months ago
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this post was submitted on 07 May 2024
892 points (100.0% liked)

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