Who measures uranium in pounds? I feel like if you’re not using metric you probably shouldn’t be handling uranium.
Alpha decay go brrrrrrr
Submitted 3 weeks ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/5e38a2bd-d67d-4afd-84b8-7bd4428d48d7.jpeg
Comments
skisnow@lemmy.ca 3 weeks ago
hperrin@lemmy.ca 3 weeks ago
GOD DAMNIT! Who touched my Uranium-235?? I left it RIGHT HERE where this lead is.
xx3rawr@sh.itjust.works 3 weeks ago
Somebody touch-a my U235
SaharaMaleikuhm@feddit.org 3 weeks ago
Just eat the lead to make all the worries disappear
ThrowawayPermanente@sh.itjust.works 3 weeks ago
Whose responsible this?!?!
Iron_Lynx@lemmy.world 3 weeks ago
So I ran the numbers. U-235 decays into Pb-207, which means about 12% of its mass is radiated away in alpha decay. Which sounds like a fuckton.
Also, it’ll mean that that chunk of lead will be a touch heavier, at 13.2 lbs
The Maths:
U-235 decays into Pb-207. To three significant digits, 207/235 = 0.881, equivalent to 88.1%, meaning 11.9% is radiated away.
88.1% of 15 lbs = 13.2 lbs.sga@piefed.social 3 weeks ago
also, uranium's half life is 700 million years, so we expect (207/235)*7.5 (of lead) + 7.5 (uranium) ~ 14.106382978723405 lump.
also, a lot of the helium produced will remain trapped inside (most heavy metal lumps act as sponges for little gasses). but 700 mil years is also a large amount of time, so much of it would diffuse out. I could checkup diffusion statistics for he d pb-u but i would have to probably do a double integral (as pb-u combination is not fixed, and we can not simply do the error function calculation), so skipping that. but it is safe to say that we will have a lump of ~50% U, 44% pb, and 6% He (by mass), and a significant amount of he will remain in
Iron_Lynx@lemmy.world 2 weeks ago
So it would be more accurate to say that 13.2 lbs would be a minimum for the lump’s mass.
notabot@piefed.social 3 weeks ago
Woahhh. That's heavy maaannn.
AtariDump@lemmy.world 3 weeks ago
cryoistalline@lemmy.ml 3 weeks ago
u-235 has a half life of 704 million years. only half of it would have decayed.
Zuriz@sh.itjust.works 2 weeks ago
1 hour here is 7 years on earth .jpg
Maroon@lemmy.world 3 weeks ago
No snoot, there’d be crabs!!
This meme is false.
jawa22@lemmy.blahaj.zone 3 weeks ago
Reminds me of my ingot of invar. Every fee years I try to think of something to do with it, but still haven’t come up with anything.
zorblitz@mander.xyz 2 weeks ago
What’s invar?
jawa22@lemmy.blahaj.zone 2 weeks ago
In short, it is an alloy that experiences almost zero thermal expansion or contraction.
ChicoSuave@lemmy.world 3 weeks ago
So a chunk of lead today could have been pre-cambrian uranium?
klemptor@startrek.website 3 weeks ago
Awww greyhound snoot 😍
guthibnet@lemmings.world 2 weeks ago
Ayo nothing special here but if you’re a Unity / Python Coder and get stuck and search for answers, you’re probably familiar with:
and no, not github. Just see what happens…
quediuspayu@lemmy.dbzer0.com 3 weeks ago
Put that chunk of uranium on a scale and you have a 700 milion year calendar
slaneesh_is_right@lemmy.org 3 weeks ago
Thanks but i find an annual calendar already pretty overwhelming