this post was submitted on 20 Dec 2024
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Today I Learned

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

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[–] captain_aggravated 16 points 10 hours ago

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.

[–] [email protected] 6 points 9 hours ago (1 children)
[–] [email protected] 3 points 9 hours ago (1 children)

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

[–] [email protected] 2 points 5 hours ago

Yeah probably. I like their interpretation though

[–] shield_gengar 4 points 10 hours ago (1 children)

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

[–] [email protected] 3 points 9 hours ago* (last edited 9 hours 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

[–] [email protected] 3 points 7 hours 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.

[–] [email protected] 2 points 9 hours ago (1 children)

Oh shit sam o nella was right

[–] [email protected] 2 points 38 minutes ago
[–] [email protected] 23 points 1 day ago* (last edited 1 day 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.

[–] [email protected] 26 points 23 hours 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

[–] [email protected] 4 points 8 hours ago

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

[–] [email protected] 15 points 1 day 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 4 points 10 hours 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.

[–] [email protected] 4 points 9 hours 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

[–] [email protected] 1 points 8 hours ago

Thanks, that's a lot more than my sketchy memory of what my dad told me (WWII pilot). Might not be where "under the wire" came from but it's fascinating.

[–] [email protected] 4 points 16 hours ago

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

[–] [email protected] 6 points 18 hours ago (2 children)

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

[–] [email protected] 4 points 9 hours ago

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.

[–] [email protected] 3 points 9 hours ago

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

[–] [email protected] 79 points 1 day ago (5 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.

[–] [email protected] 5 points 21 hours ago

So much better in Scots pronunciation

BAWZOOT MIN

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[–] [email protected] 97 points 1 day 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

[–] [email protected] 27 points 1 day ago (9 children)

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

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[–] [email protected] 16 points 1 day 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.

[–] [email protected] 6 points 10 hours ago

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

[–] [email protected] 18 points 1 day ago (1 children)
[–] [email protected] 4 points 14 hours ago

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

[–] [email protected] 34 points 1 day 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.

[–] [email protected] 41 points 1 day ago (1 children)
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[–] [email protected] 32 points 1 day ago (9 children)

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

[–] [email protected] 37 points 1 day 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.

[–] [email protected] 9 points 14 hours ago

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

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