this post was submitted on 20 Jul 2023
186 points (97.4% liked)

Today I Learned

17914 readers
329 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
 

Liquid glass is poured over a bath of liquid tin where it floats on top, gradually cooling until it can be lifted off, annealed to prevent cracking, cut and packaged.

Also, this all has to be done without oxygen, because tin dioxide will stick to glass

top 12 comments
sorted by: hot top controversial new old
[–] soupspoon 35 points 1 year ago (2 children)

Neat, I never even thought about why window panes were a thing. I like to make a game almost of not taking things for granted but that's impossible to do completely, and it's fun when some knowledge and insight comes along about an aspect of how things work that was invisible to me

[–] [email protected] 16 points 1 year ago (2 children)

Wanna learn another neat thing? Most people dont know how braided cables are made. Thats what i do for a living. Check out cable harness braiding on youtube when you get a chance. The braiding machines are pretty neat.

[–] [email protected] 7 points 1 year ago* (last edited 1 year ago)

Do they operate on a similar (or identical) principle as the machines which make braided rope?

[–] soupspoon 1 points 1 year ago

I could never get a reply to post before, but I had fun watching videos of those machines! I liked the one with 30 or so little yellow bobbins dancing around, and the giant metal monster one was intimidating at first but the braid was really satisfying

[–] [email protected] 9 points 1 year ago (1 children)

Surprisingly some companies still make Drawn Glass, mostly sold for restoring historical buildings. Personally I like the slightly curved look it has.

[–] soupspoon 5 points 1 year ago (2 children)

I love seeing examples of the old ways still being produced. I always thought old glass panes weren't totally flat because of the way things like glass and vinyl warp, and now I'm wondering if it was actually just that way since production. I'm not sure how long it takes glass to warp like that or how it would look different from drawn glass

[–] Tavarin 16 points 1 year ago (1 children)

Glass doesn't flow, that's a myth from the fact that when people installed drawn glass they favoured putting the thicker side down so that it was more stable.

[–] soupspoon 8 points 1 year ago

Oh! Well how about that. I was so sure it was true, over a long period of time, but I just looked it up and lo and behold you're right. I'm learning a lot in this one thread

[–] [email protected] 4 points 1 year ago (1 children)

You should check out this guy's Instagram. He goes hard on restoring old windows with a focus on sharing knowledge.

https://instagram.com/gantelius_fonsterhantverk?igshid=MmU2YjMzNjRlOQ==

[–] soupspoon 2 points 1 year ago

I kept trying to reply way back when and couldn't get it to post, but I followed that guy and I love every time his work pops up, it's so freaking satisfying to watch

[–] lemmyshmemmy -2 points 1 year ago (1 children)

I'm so thankful for Wikipedia.

[–] [email protected] 10 points 1 year ago

After years and years of using it for free and never contributing. I finally pulled the trigger 3 years ago and now I make recurring donations (~$25/yr). Absolutely no regrets.

load more comments
view more: next ›