this post was submitted on 09 Jun 2024
438 points (98.9% liked)

xkcd

11289 readers
464 users here now

A community for a webcomic of romance, sarcasm, math, and language.

founded 2 years ago
MODERATORS
 

https://xkcd.com/2943

Alt text:

I'm an H⁺ denier, in that I refuse to consider loose protons to be real hydrogen, so I personally believe it stands for 'pretend'.

all 36 comments
sorted by: hot top controversial new old
[–] [email protected] 46 points 1 year ago (2 children)
[–] [email protected] 28 points 1 year ago (3 children)

You need a 4 year degree to understand the wall of text in that explanation.

[–] [email protected] 28 points 1 year ago (1 children)

I was about to say "not really," but then I remembered that I have a couple of those, so yeah, probably.

[–] [email protected] 3 points 1 year ago (1 children)

I really hope you're joking. It's written with high school level vocabulary at most.

[–] [email protected] 21 points 1 year ago (4 children)

It appears that an individual's heuristic analytical mechanism is engendering a subversion of their affective response system, resulting in epistemic determinations that lack substantiation from the linguistic parameters prevalent within the upper two quartiles of the demographic distribution.

[–] [email protected] 6 points 1 year ago

Thank you, Mr. Data.

[–] [email protected] 5 points 1 year ago

We’ve become exceedingly efficient at it.

[–] [email protected] 3 points 1 year ago
[–] [email protected] 3 points 1 year ago

Exponents and Logarithms can be first taught in Middle School in many places, but sometimes get revisited during Calculus in AP High School or at University level.

[–] [email protected] 14 points 1 year ago* (last edited 1 year ago) (1 children)

Explainexplainxkcd.com when?

[–] [email protected] 46 points 1 year ago (1 children)

This one is easy. As we know from words like "photon" and "triumph", "pH" is actually pronounced "f".

[–] [email protected] 2 points 1 year ago

I wanted to make that joke 😟

[–] [email protected] 35 points 1 year ago* (last edited 1 year ago) (2 children)

They told me at school that ‘p’ meant ‘negative log’. So ‘pH’ means ‘the negative log of the concentration of Hydrogen ions in moles/litre’.

pH 1 is 1 x 10^-1^ (strong acid)

pH 7 is 1 x 10^-7^ (neutral)

pH 14 is 1 x 10^-14^ (alkaline)

(Chemistry was a long time ago, though)

[–] [email protected] 35 points 1 year ago* (last edited 1 year ago) (4 children)

The xkcd breaks it down for us, basically we don't know because the person who coined the term never specified what it was. It's either: puissance, potens, or potenz. Which means potency in French, ~~Dutch~~ Danish and German, the three languages the scientists published in.

[–] [email protected] 10 points 1 year ago (1 children)

Dutch and Danish are not the same language. So yeah, the Danish scientist published in Danish, not Dutch.

[–] [email protected] 2 points 1 year ago

Oh shit, my bad lol.

[–] [email protected] 2 points 1 year ago

I was taught it meant 'potential' but that was 6th Grade in the US, so I guess it was all a lie.

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

Can the term potency also be used to refer to the exponent in English? Because that is what is meant by the terms in the other languages and I haven't come across that usage of the word potency in English

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

I think that's accurate, the exponent is what it's referring to, but the pedantic types are worried about what the p literally means.

[–] [email protected] 2 points 1 year ago

Thank you. I think the decades-old chemistry-class flashback distracted me from thoroughly absorbing the full post!

[–] [email protected] 8 points 1 year ago (1 children)

You're missing a 4 in the alkaline line

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

Thank you (4 now added!)

[–] [email protected] 26 points 1 year ago (2 children)

Isn't it Potential of Hydrogen?

[–] [email protected] 3 points 1 year ago (2 children)

That's what I was taught back in 6th Grade.

[–] [email protected] 11 points 1 year ago (1 children)

For what it's worth, my job is as an analytical chemist, dealing with pH readings every single day, and I've always thought this was correct.

[–] [email protected] 4 points 1 year ago

Are We Smarter Than A 5th Grader?

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

The funny thing is that I intellectually knew that there were plenty of non-English speaking scientists, but that knowledge was never considered.

[–] [email protected] 2 points 1 year ago

Something like that. It's an incredibly weird term.

[–] [email protected] 13 points 1 year ago

I assumed it was rho (ρ) of hydrogen since rho is used for density...

[–] [email protected] 11 points 1 year ago
[–] [email protected] 7 points 1 year ago

It stands for peeps mcgoo

[–] [email protected] 6 points 1 year ago

It stands for "piled".