this post was submitted on 21 Mar 2025
635 points (98.6% liked)

Science Memes

13561 readers
2983 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.



Rules

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.

This is a science community. We use the Dawkins definition of meme.



Research Committee

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago
MODERATORS
 
top 20 comments
sorted by: hot top controversial new old
[–] [email protected] 11 points 1 day ago (1 children)

If you put a cat into the box with the uranium and wait the same amount of time, that cat will be dead. this is true. no questions. thank you.

[–] Brickhead92 7 points 1 day ago

Unless the uranium in the box caused a mutation in the cat giving it eternal life.

[–] LouNeko 62 points 1 day ago

>Puts Iron-56 in a box.
>checks at the heat death if the universe
>still Iron-56
>mfw box also Iron-56

[–] [email protected] 14 points 1 day ago (1 children)

Damn bro, how many times has this happened to you

[–] InternetCitizen2 8 points 1 day ago

Enough to post the meme

[–] geomela 6 points 1 day ago (1 children)

So is Lead-207 special lead, or is it just, like, lead?

[–] [email protected] 4 points 15 hours ago

The normal lead we know but still special. Is the last stable element in the PSE and there is the theory that it's actually radioactive (unstable) but the decay is so slow that we probably never see a single atom of it decaying.

[–] FuglyDuck 54 points 1 day ago (1 children)

But if you don’t look in side 2 billion years later, it’s both U-235 and lead-207!

[–] aeronmelon 25 points 1 day ago

Schrödinger’s radioactive decay may or may not have killed his cat.

[–] [email protected] 30 points 1 day ago (1 children)

The lump would still have about 14% uranium still in it. (If my understanding of half-life is correct)

[–] PieMePlenty 16 points 1 day ago (4 children)

Afaik its always going to have some parts of uranium right? 50% after one half life, 25% after two half lives and it will keep on halving practically forever (or till the last atom decays). In the end it comes down to when you consider it a negligible amount.

[–] [email protected] 18 points 1 day ago

I mean, yes, that's how it would work if there were an infinite number of atoms in the piece. There's a finite amount, though, so eventually there will be a point when all the atoms have completely decayed.

All models are wrong, but some are useful.

[–] FuglyDuck 21 points 1 day ago* (last edited 1 day ago) (1 children)

after a certain point, you're going to get to where you have to split an atom or two.

fairly sure that'd be far less exciting than normal.

Edit: i decided to try and figure out how long that would take.. and per usual the law of large numbers caused my eyes to glaze over.

[–] [email protected] 2 points 1 day ago (1 children)

half life times log2(amount of atoms), right?

[–] FuglyDuck 1 points 1 day ago

I mean I didn’t get that far, I lost track of how many zeroes were in the half-life.

(It’s 704ish million, right?)

[–] [email protected] 12 points 1 day ago

Yeah, thats what I was using to get 14%.

2billion years is about 2.8 halflives, so I calculated (1/2)^2.8 ~ 0.14.

[–] [email protected] 17 points 1 day ago

Damn greedy corporations and their shrinkflation

[–] LovableSidekick 4 points 1 day ago* (last edited 1 day ago)

Schrödinger’s Nucleides.

[–] [email protected] 3 points 1 day ago

Like in inflation: now you have enough money to buy a bottle of vodka, in 10 years these money can barely buy you a matchbox.