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(Big Think)   Making neutral hydrogen atoms in the Universe is harder than you think, and would've taken much longer if not for a "forbidden" quantum transition that actually happens   (bigthink.com) divider line
18
    More: Cool, Proton, Atom, Electron, Atomic nucleus, Quantum mechanics, Photon, Energy level, Hydrogen atom  
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484 clicks; posted to STEM » on 08 Feb 2023 at 10:35 AM (6 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



18 Comments     (+0 »)
View Voting Results: Smartest and Funniest
 
Snapper Carr
2023-02-08 10:58:00 AM  
Fark user imageView Full Size
 
Markus5
2023-02-08 11:15:48 AM  
Who is this Big Stink guy anyway?
 
PartTimeBuddha [OhFark]
2023-02-08 11:22:52 AM  

Markus5: Who is this Big Stink guy anyway?


Nothin' like the good poop of a morning thread
 
Wine Sipping Elitist [TotalFark]
2023-02-08 12:03:43 PM  
Forbidden, you say? Is the answer related to quantum tunneling during the period of inflation?

*reads article*

Lol I still don't know but that's my final answer.
 
PartTimeBuddha [OhFark]
2023-02-08 12:13:08 PM  
weird.

i remember when all this was fields.
 
BlakCat
2023-02-08 12:18:02 PM  
https://kottke.org/23/02/where-the-elements-came-from
Fark user imageView Full Size
 
New Farkin User Name
2023-02-08 12:20:05 PM  

Wine Sipping Elitist: Forbidden, you say? Is the answer related to quantum tunneling during the period of inflation?

*reads article*

Lol I still don't know but that's my final answer.


Forbidden transitions simply have a very low probability to occur (it takes a while for it to happen) and in in regular circumstances the state will be disrupted before they get a chance to perform the transition. They're forbidden in the same sense you're forbidden from walking across a highway. If traffic is diffuse enough you can pull it off, but if there are a lot of cars odds are something else will happen to you before you can finish crossing.
 
Tranquil Hegemony [BareFark]
2023-02-08 12:25:55 PM  
Fark user imageView Full Size
 
Ivo Shandor [TotalFark] [OhFark]
2023-02-08 12:46:44 PM  

BlakCat: https://kottke.org/23/02/where-the-elements-came-from[Fark user image image 850x413]


I disagree with that chart - it needs another category. Several of those elements (like radon) are formed on Earth, as decay products of the uranium and thorium which came from those neutron stars or whatever. Any amounts which were made in the initial event decayed away long before our planet formed.
 
PirateKing [OhFark]
2023-02-08 1:13:13 PM  

PartTimeBuddha: weird.

i remember when all this was fields.


I appreciate you.
 
PartTimeBuddha [OhFark]
2023-02-08 1:45:42 PM  

PirateKing: PartTimeBuddha: weird.

i remember when all this was fields.

I appreciate you.


*blush*

you're quite the charmer
 
Obscene_CNN
2023-02-08 1:48:15 PM  
The stuff they find to babble on and on about...
 
PirateKing [OhFark]
2023-02-08 1:52:48 PM  

PartTimeBuddha: PirateKing: PartTimeBuddha: weird.

i remember when all this was fields.

I appreciate you.

*blush*

you're quite the charmer


Just pleasantly strange.
 
PartTimeBuddha [OhFark]
2023-02-08 1:57:29 PM  

PirateKing: PartTimeBuddha: PirateKing: PartTimeBuddha: weird.

i remember when all this was fields.

I appreciate you.

*blush*

you're quite the charmer

Just pleasantly strange.


Go on...
 
PartTimeBuddha [OhFark]
2023-02-08 1:58:36 PM  
Oh arse I missed the quark joke I inadvertently made
 
PirateKing [OhFark]
2023-02-08 2:14:51 PM  

PartTimeBuddha: Oh arse I missed the quark joke I inadvertently made


Some days you're up and everything looks positive, then you absorb an electron and poof suddenly you're down, and the whole particle's gone neutral.
 
PartTimeBuddha [OhFark]
2023-02-08 2:21:38 PM  

PirateKing: gone neutral


Frankie Goes To Hollywood - Relax (Official Video)
Youtube Yem_iEHiyJ0
 
PartTimeBuddha [OhFark]
2023-02-09 5:38:23 AM  
How Earth REALLY Moves Through the Galaxy
Youtube 1lPJ5SX5p08
 
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