this post was submitted on 20 Dec 2024
372 points (98.7% liked)

Today I Learned

18071 readers
693 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 2 years ago
MODERATORS
 

I never knew and got curious and looked it up. I guess it makes more sense than slamming your testicals against the wall.

top 50 comments
sorted by: hot top controversial new old

You will hear Apollo astronauts occasionally say "all balls" or "five balls." After performing maneuvers, they would check their trajectory by taking fixes on stars using the telescope/sextant, this data would be fed into the guidance computer, which would compute their deviation from their intended course. If they were perfectly on their intended course, it would display a variation of 00000. "All balls." Perfectly accurate.

[–] Sam_Bass@lemmy.world 6 points 1 day ago (1 children)
[–] DelightfullyDivisive@lemmy.world 3 points 1 day ago (1 children)

Based on the video for that song, the band was unaware of this.

[–] Sam_Bass@lemmy.world 2 points 1 day ago

Yeah probably. I like their interpretation though

[–] shield_gengar@sh.itjust.works 6 points 1 day ago (1 children)

Interesting. Similarly, balls out has nothing to do with testicles

[–] LifeInMultipleChoice@lemmy.dbzer0.com 6 points 1 day ago* (last edited 1 day ago) (1 children)

Another fun one is that in the phrase "three sheets to the wind" Sheets do not refer to the sails as many believe, they actually refer to the ropes that tie down the sales. So you lose a sheet, the sail becomes less predictable. If you lost 3 sails I think you'd just be dead in the water most times, not stumbling about

[–] kalpol@lemmy.world 5 points 1 day ago

Patrick O'Brian has a bunch of opinions about these. "The devil to pay" was spreading pitch on, or paying, the hard-to-reach seam between deck and hull called the devil. At loggerheads means fighting with the long poles with a hot iron ball on the end , or loggerheads, used to heat pitch.

[–] Canadian_Cabinet@lemmy.ca 99 points 2 days ago (1 children)

Another fun phrase with similar etymology is "pulling out all the stops". It comes from church organs, where the stops are all of the levers that can change the timbre

[–] Lifecoach5000@lemmy.world 28 points 2 days ago (2 children)

Ohhhh this makes sense too! I actually have a pipe organ in my garage so I know exactly what you’re talking about!

[–] Zachariah@lemmy.world 25 points 2 days ago (5 children)

I want a pipe organ in my garage.

[–] LifeInMultipleChoice@lemmy.dbzer0.com 8 points 1 day ago* (last edited 1 day ago) (1 children)

I wish I owned a garage. Or a house. Or a fucking shed. Need to start smaller. Maybe food first. We'll work our way into it

[–] Tja@programming.dev 2 points 1 day ago (1 children)
[–] LifeInMultipleChoice@lemmy.dbzer0.com 3 points 1 day ago* (last edited 1 day ago)

Yeah i didn't catch that, thanks

load more comments (4 replies)
load more comments (1 replies)
[–] Naich@lemmings.world 79 points 2 days ago (2 children)

Going "balls out" refers to governors on steam engines which used centrifugal force on a pair of balls to regulate the speed of the engine. At full speed the balls were out at the maximum.

[–] Mr_Blott@feddit.uk 6 points 1 day ago

So much better in Scots pronunciation

BAWZOOT MIN

[–] AI_toothbrush@lemmy.zip 11 points 2 days ago (3 children)

Now i wonder what the origin of "tripping balls" is?

Have you ever accidentally stood on a ball (football/dodgeball) and tripped? If you have you may have an idea where the expression comes from. You trip really hard.

load more comments (2 replies)
[–] LovableSidekick@lemmy.world 25 points 2 days ago* (last edited 2 days ago) (2 children)

"Just under the wire" has a similar aviation lineage. According to my dad some WWII fighter planes had a wire attached across the throttle lever slot to mark the point that was considered "full throttle". The wire was breakable, so a pilot in a desperate situation could push the throttle farther forward if necessary, but I think there was a danger of blowing up the engine. So being just under the wire meant not quite past that point.

[–] pwnicholson@lemmy.world 29 points 1 day ago (1 children)

Cool story, but not where that comes from and not how that phrase is used.

"Just under the wire" means "just in time", "at the last second", etc.

It comes from horse racing and the wire they would strong across the finish line. Same as "down to the wire"

https://www.dictionary.com/browse/under--the--wire

[–] LovableSidekick@lemmy.world 6 points 1 day ago

Interesting - I know about the horse-racing wire, it was to trip the photo-finish camera.

[–] EvacuateSoul@lemmy.world 18 points 2 days ago (4 children)

WEP, war emergency power. Depends on the aircraft how long you could use it.

https://en.m.wikipedia.org/wiki/War_emergency_power

[–] captain_aggravated@sh.itjust.works 5 points 1 day ago (1 children)

The Corsair had water injection as a WEP, I forget by what mechanism it worked but it could make that big ol' Pratt & Whitney eat its own guts for more horsepower.

[–] Madison420@lemmy.world 7 points 1 day ago

Water methanol injection, cools the air charge which makes it denser, more air you can cram in the more fuel you can cram in with it.

https://ww2aircraft.net/forum/threads/the-f4u-1-and-water-injection.40598/?amp=1

[–] dave@feddit.uk 7 points 1 day ago (2 children)

TIL you can increase engine power by mixing water into the fuel.

You can also increase speed by not using any propellers or moving parts. At supersonic speeds you capture the air, compress it into a chamber than hit it with a spark and blow the fucker up. That's how a ramjet engine works. China just made one that uses pulse like combustions in a engine that's only about a foot wide, and maybe 13 feet long. Speeds up to mach 4.. or 5000km/h (3100mph) at about 65,000 feet.

[–] Madison420@lemmy.world 3 points 1 day ago

It needs to be injected into the air charge with the best atomization you can manage for best results.

[–] joulethief@discuss.tchncs.de 4 points 1 day ago

Thanks for the read, that sent me down an interesting rabbit hole

load more comments (1 replies)
[–] joel_feila@lemmy.world 3 points 1 day ago (1 children)

Oh shit sam o nella was right

[–] Psythik@lemmy.world 2 points 1 day ago (1 children)
[–] joel_feila@lemmy.world 1 points 5 hours ago

Sam O'nella is a comedy education YouTuber

[–] BlueLineBae@midwest.social 36 points 2 days ago (1 children)

So is the term "grounded" and I genuinely wonder what parents used to say to their misbehaved children before airplane terminology was commonplace.

[–] nokturne213@sopuli.xyz 42 points 2 days ago (1 children)
load more comments (1 replies)
[–] PlaidBaron@lemmy.world 18 points 2 days ago (2 children)

Kind of like 'having one's balls in a vice'. It actually refers to the old days when ball bearings were made by hand. It was tedious work and the pressure to make ball bearings for the burgeoning industrial revolution was intense. They were cut out of metal and then polished smooth, secured in a vice. Hence, 'having your balls in a vice' meant being under intense pressure.

[–] Agent641@lemmy.world 6 points 1 day ago

Nowadays I just keep my dick in a vice, as AvE recommends

[–] YarHarSuperstar@lemmy.world 20 points 2 days ago (1 children)
[–] Tangent5280@lemmy.world 5 points 1 day ago

Now I'm confused. Was OP just kidding about the balls in a vice saying?

[–] hmonkey@lemy.lol 33 points 2 days ago (9 children)

Not to be confused of course with "balls deep", which is exactly what it sounds like

[–] ivanafterall@lemmy.world 41 points 2 days ago (1 children)

It's when your shaft is so damn deep that you can only barely make out your ball amidst the shaggy rough entanglement. Courses like Oakmont Country Club, Ko'olau, and Pinehurst are some examples that can challenge even top golfers.

[–] Tangent5280@lemmy.world 11 points 1 day ago

This thread is a doozy, can't tell whats real and what isnt anymore

load more comments (8 replies)
load more comments
view more: next ›