335
submitted 2 months ago by [email protected] to c/[email protected]
top 50 comments
sorted by: hot top controversial new old
[-] [email protected] 60 points 2 months ago

Not me. I make my hydrogen from scratch every morning. Takes a while, but you can really tell the difference.

[-] [email protected] 6 points 2 months ago

Mine is mixed with methane.

[-] [email protected] 47 points 2 months ago* (last edited 2 months ago)

I've always suspected most of life's problems could be traced back to hydrogen.

[-] [email protected] 12 points 2 months ago

This is giving me Groundskeeper Willie complaining about the Scots vibes

[-] [email protected] 3 points 2 months ago

I want you both to help me with therapy.. I just need to point fingers!

[-] [email protected] 2 points 2 months ago

Damn hydrogen! It ruined the universe!

[-] [email protected] 1 points 2 months ago

i think if you have problems with your weight, that is mostly an oxygen problem

[-] [email protected] 40 points 2 months ago

If you break down that far, isn't everything as old as the universe?

[-] [email protected] 21 points 2 months ago* (last edited 2 months ago)

When fusion or fission occurs you get new atoms.

It's Hydrogen that's existed since the universe cooled enough for electrons and protons to make atoms. Seconds after the big bang.

That's most hydrogen.

It's never been fused into heavier elements just still sticking around and caught in the planetary part of the solar system rather than the sun itself. Or any previous suns.

There's some helium like that but most helium was formed inside suns later, and heavier elements all formed later in suns or supernovas.

[-] [email protected] 4 points 2 months ago

It's Hydrogen that's existed since the universe cooled enough for electrons and protons to make atoms. Seconds after the big bang.

Atoms didn't exist until 380,000 years after the big bang. Before that the universe was too dense for atoms to form and everything existed as a hot dense plasma where no electron could be captured by protons and neutrons. The protons that make up the nucleus of hydrogen did exist, it's just that everything was too energetic to become an atom yet.

[-] [email protected] 2 points 2 months ago

heavier elements all formed later in suns or supernovas

Don't forget neutron star collisions. Modern physics doesn't think there's enough energy in supernovae to create all the elements, so some must have come from neutron star collisions.

[-] [email protected] 2 points 2 months ago

But you don't get new protons and neurons that way right? Higher nucleei are just hydrogen nucleei that got too cozy with each other.

[-] [email protected] 1 points 2 months ago

More like 380,000 years after the big bang you still needed everything to cool down and forces to separate and lots of other really cool stuff to happen before hydrogen could form.

[-] [email protected] 7 points 2 months ago

I’m a biologist rather than a physicist, but I will take a swing at this.

Not really, although it depends on how you do your definitions. Most of the elements were formed by stars, which were themselves formed by the OG hydrogen, so hydrogen came first. So, first energy, then particles, then hydrogen, then stars and such, then oxygen and iron and all of those things.

I’m open to any corrections.

[-] [email protected] 5 points 2 months ago* (last edited 2 months ago)

"All of the protons in the universe have been around since the beginning of the universe. Most of them haven't undergone nuclear fusion"

Isn't that good of a post title

[-] [email protected] 2 points 2 months ago

Maybe not for you, but its much more interesting for me, as it gives more info than "if you think about it, old things are old"

load more comments (1 replies)
[-] [email protected] 1 points 2 months ago

As far as I'm aware, protons don't decay. If they formed at the beginning of the universe, they stick around until they get annihilated by anti-matter. But are we getting new protons after the universe formed? No idea.

[-] [email protected] 29 points 2 months ago

Hydrogen is a colorless, odorless gas that, given enough time, starts to wonder where it came from.

[-] [email protected] 22 points 2 months ago

As Carl Sagan said, "The cosmos is within us. We are made of star-stuff."

[-] [email protected] 3 points 2 months ago

Came here to make sure it was said.

[-] [email protected] 16 points 2 months ago* (last edited 2 months ago)

No wonder.

  • Water: 2 hydrogens per 1 oxygen, 66%!
  • Carbohydrates: same story
  • Fats: a LOT of hydrogen
  • Proteins: yep, lots of hydrogen!
  • Vitamins: same

Most organic molecules feature a lot of hydrogen that essentially serves as a placeholder for all the free bonds of carbon (and there is plenty!), oxygen, and nitrogen. Hydrogen is essentially the default thing to connect to about any organic molecule. And yes, it is primarily taken from water in the grand scheme of things.

[-] [email protected] 8 points 2 months ago

To expand on that, hydrogen is just lone protons. Some of those protons pick up an electron, but if it's a proton, it's hydrogen. And considering that nuclear fusion is hard^[citation needed]^, it makes sense that one of the most common things to attach to other atoms would just be the smallest, most abundant, and most simple kind of atom out there.

[-] JasonDJ 1 points 2 months ago

Well there's usually an electron orbiting it...and sometimes it's even stuck to a neutron.

You had me wondering if "hydrogen" was just the name we've given a rogue proton.

[-] [email protected] 2 points 2 months ago

An H+ ion is a rogue proton. I've heard a physicist say before that she always would forget this fact.

[-] [email protected] 12 points 2 months ago* (last edited 2 months ago)

Explains why I feel so tired. Ive literally been here since the beginning of time

[-] [email protected] 6 points 2 months ago

I'm not even supposed to be here today.

[-] [email protected] 10 points 2 months ago

Given enough time, Hydrogen will begin to wonder where it came from, and where it is going.

[-] [email protected] 6 points 2 months ago

If it hadn't been for hydrogen, oh. I'd been married long time ago. Where did you come from, where did you go? Where did you come from hydrogen, oh.

[-] [email protected] 7 points 2 months ago

No wonder I'm so fucking tired

[-] [email protected] 6 points 2 months ago

some radiation produces proton emission, so maybe not all of them are that old

[-] [email protected] 2 points 2 months ago

I was gonna say the same

[-] [email protected] 5 points 2 months ago

Explains the knee and back pain.

[-] [email protected] 3 points 2 months ago* (last edited 2 months ago)
[-] [email protected] 9 points 2 months ago

Unrelated to the topic:

Is the aim of CC "..." text at the botton to prevent ai from using your comments or something? (I'm trying to understand.)

[-] [email protected] 7 points 2 months ago

I get the sentiment but wouldn’t you WANT an AI to be trained on your own words? That would make the AI more favorable to your points of view. By self-censoring you effectively let everyone else in the world decide the direction AI goes.

[-] [email protected] 4 points 2 months ago

Some people don't want their intellectual property packaged in a paid system without getting paid themselves.

[-] [email protected] 5 points 2 months ago* (last edited 2 months ago)

Unrelated to the topic:

Is the aim of CC “…” text at the botton to prevent ai from using your comments or something? (I’m trying to understand.)

In theory, yes. I realize it probably won't work, but it's a momentary copy and paste, so it's a low hanging fruit to give it a try, just in case it does work.

~Anti~ ~Commercial-AI~ ~license~ ~(CC~ ~BY-NC-SA~ ~4.0)~

[-] [email protected] 10 points 2 months ago* (last edited 2 months ago)

Ahah you blundering fool, I’m going to add that comment directly into my AI because you did not provoke the magical spell to stop me.

[-] [email protected] 2 points 2 months ago* (last edited 2 months ago)
[-] [email protected] 2 points 2 months ago

The terms of that license seem like a non-commercial AI would be just fine to use it, is that not intended?

[-] [email protected] 3 points 2 months ago* (last edited 2 months ago)

Is anyone making non-commercial AI? Is that actually an issue?

[-] [email protected] 2 points 2 months ago

I have but I'm not an issue, I just have issues 😎

load more comments (4 replies)
[-] [email protected] 2 points 2 months ago

I see, I see, tnx

[-] [email protected] 2 points 2 months ago

Hydrogen is an electron and proton. I am guessing that most protons have been fully ionized many times since the beginning of the universe, thus not being complete intact atoms. Checkmate scientists!

load more comments
view more: next ›
this post was submitted on 24 Apr 2024
335 points (97.2% liked)

Today I Learned

16440 readers
363 users here now

What did you learn today? Share it with us!

We learn something new every day. This is a community dedicated to informing each other and helping to spread knowledge.

The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:

Rules (interactive)


Rule 1- All posts must begin with TIL. Linking to a source of info is optional, but highly recommended as it helps to spark discussion.

** Posts must be about an actual fact that you have learned, but it doesn't matter if you learned it today. See Rule 6 for all exceptions.**



Rule 2- Your post subject cannot be illegal or NSFW material.

Your post subject cannot be illegal or NSFW material. You will be warned first, banned second.



Rule 3- Do not seek mental, medical and professional help here.

Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.



Rule 4- No self promotion or upvote-farming of any kind.

That's it.



Rule 5- No baiting or sealioning or promoting an agenda.

Posts and comments which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.



Rule 6- Regarding non-TIL posts.

Provided it is about the community itself, you may post non-TIL posts using the [META] tag on your post title.



Rule 7- You can't harass or disturb other members.

If you vocally harass or discriminate against any individual member, you will be removed.

Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.

For further explanation, clarification and feedback about this rule, you may follow this link.



Rule 8- All comments should try to stay relevant to their parent content.



Rule 9- Reposts from other platforms are not allowed.

Let everyone have their own content.



Rule 10- Majority of bots aren't allowed to participate here.

Unless included in our Whitelist for Bots, your bot will not be allowed to participate in this community. To have your bot whitelisted, please contact the moderators for a short review.



Partnered Communities

You can view our partnered communities list by following this link. To partner with our community and be included, you are free to message the moderators or comment on a pinned post.

Community Moderation

For inquiry on becoming a moderator of this community, you may comment on the pinned post of the time, or simply shoot a message to the current moderators.

founded 1 year ago
MODERATORS