this post was submitted on 05 Jul 2024
358 points (98.4% liked)

Lemmy Shitpost

26838 readers
3478 users here now

Welcome to Lemmy Shitpost. Here you can shitpost to your hearts content.

Anything and everything goes. Memes, Jokes, Vents and Banter. Though we still have to comply with lemmy.world instance rules. So behave!


Rules:

1. Be Respectful


Refrain from using harmful language pertaining to a protected characteristic: e.g. race, gender, sexuality, disability or religion.

Refrain from being argumentative when responding or commenting to posts/replies. Personal attacks are not welcome here.

...


2. No Illegal Content


Content that violates the law. Any post/comment found to be in breach of common law will be removed and given to the authorities if required.

That means:

-No promoting violence/threats against any individuals

-No CSA content or Revenge Porn

-No sharing private/personal information (Doxxing)

...


3. No Spam


Posting the same post, no matter the intent is against the rules.

-If you have posted content, please refrain from re-posting said content within this community.

-Do not spam posts with intent to harass, annoy, bully, advertise, scam or harm this community.

-No posting Scams/Advertisements/Phishing Links/IP Grabbers

-No Bots, Bots will be banned from the community.

...


4. No Porn/ExplicitContent


-Do not post explicit content. Lemmy.World is not the instance for NSFW content.

-Do not post Gore or Shock Content.

...


5. No Enciting Harassment,Brigading, Doxxing or Witch Hunts


-Do not Brigade other Communities

-No calls to action against other communities/users within Lemmy or outside of Lemmy.

-No Witch Hunts against users/communities.

-No content that harasses members within or outside of the community.

...


6. NSFW should be behind NSFW tags.


-Content that is NSFW should be behind NSFW tags.

-Content that might be distressing should be kept behind NSFW tags.

...

If you see content that is a breach of the rules, please flag and report the comment and a moderator will take action where they can.


Also check out:

Partnered Communities:

1.Memes

2.Lemmy Review

3.Mildly Infuriating

4.Lemmy Be Wholesome

5.No Stupid Questions

6.You Should Know

7.Comedy Heaven

8.Credible Defense

9.Ten Forward

10.LinuxMemes (Linux themed memes)


Reach out to

All communities included on the sidebar are to be made in compliance with the instance rules. Striker

founded 1 year ago
MODERATORS
top 13 comments
sorted by: hot top controversial new old
[–] themeatbridge@lemmy.world 167 points 4 months ago* (last edited 4 months ago) (2 children)

I love the juxtaposition of these:

During the Pascal-B nuclear test of August 1957, a 900-kilogram (2,000 lb) iron lid was welded over the borehole to contain the nuclear blast, despite Brownlee predicting that it would not work.

A high-speed camera, which took one frame per millisecond, was focused on the borehole because studying the velocity of the plate was deemed scientifically interesting.

This idea is so incredibly stupid that science needs to study precisely how much it won't work.

Like, I wonder if the person who insisted on welding the lid in place had to go to a debriefing meeting where Brownlee showed the frame-by-frame of the lid. "So here we see the lid, and- Oh, it's gone! Look at that. Gary, did you see it? The lid you put on there to cOnTaIn ThE bLaSt, you can see it for one thousandth of a second, and then it's gone. It's either in outerspace or it has been vaporized, and we're never going to know because it happened so fast. So fast, Gary. A for effort, though. It was definitely worth bringing in the crane and a whole welding crew. Time and money well spent, because we now have a better understanding of the magnitude of how stupid you are, Gary. Here's a print of that one millisecond for you to hang in your office. Get fucked, Gary."

[–] IDew@lemm.ee 63 points 4 months ago (1 children)

When Pascal-B was detonated, the blast went straight up the test shaft, launching the cap into the atmosphere at a speed of more than 66 km/s (41 mi/s; 240,000 km/h; 150,000 mph).

Woaw. Just wow.

Very interesting article, thanks for quoting it lol

[–] EddoWagt@feddit.nl 49 points 4 months ago (1 children)

For reference, earths escape velocity at the surface is about 11 km/s. I'm not sure how quickly the cap would slow down, but if it hadn't been vaporised it surely would be orbiting the sun right now.

Also, the escape velocity from the Sun at Earths distance would be 16.6 km/s on top of earths speed, so depending on the direction it could've escaped the suns orbit as well.

But it was most likely vaporised

[–] anyhow2503@lemmy.world 37 points 4 months ago (1 children)

I remember reading somewhere that it would be the farthest manmade object from earth, far outpacing the Voyager spacecrafts, assuming it didn't vaporize.

[–] fulcrummed@lemmy.world 15 points 4 months ago (2 children)

Voyager 3: “It’s a funny story actually…”

[–] PunnyName@lemmy.world 8 points 4 months ago

*record scratch*
"You're probably wondering how I got here..."

[–] Darthjaffacake@lemmy.world 1 points 4 months ago

They do something fun with this in the three body problem. It's amazing and makes a ton of sense but in the real world the application will probably be a lot cleaner.

[–] PunnyName@lemmy.world 14 points 4 months ago

This is A+ solid gold writing for a perfect "fuck you" to Gary.

[–] rbesfe@lemmy.ca 59 points 4 months ago* (last edited 4 months ago) (2 children)

Everyone likes to joke about this manhole cover flying around in space, but if you do the math on the aerodynamic heating you get a temperature higher than the boiling point of iron.

[–] phdepressed@sh.itjust.works 8 points 4 months ago (2 children)

What is irons vaporization temp? And wouldn't space cool it down(and keep it somewhat together barring other gravitational objects affecting it.

[–] ColeSloth@discuss.tchncs.de 9 points 4 months ago

Iron goes molten at 2,800f. The air friction would have caused that long before getting to space. As for staying together and resolidifying in space....well imagine how well maple syrup would stay held together if you threw it out of a cup pretty hard. The iron would have went molten and just proceeded to "spatter" and not have any piece left heavy enough to keep up an escape velocity.

[–] erev@lemmy.world 6 points 4 months ago

space might not cool it down because the only real way for it to lose the heat would be blackbody radiation. by now it's probably cooled off but without any atmosphere or other materials to cool it off, it probably stayed hot for a while

[–] PeriodicallyPedantic@lemmy.ca 3 points 4 months ago

But also at that speed it'd only be in the atmosphere for a couple seconds; even at that high temp it may not have been able to transfer all that energy into the manhole cover. The energy may have just gone into ablating away the surface.

But it probably ablated away the whole mass of the manhole cover.