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’.

46 points
28 points

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

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28 points

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

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3 points

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

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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.

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3 points

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.

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14 points
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2 points

s0n

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46 points

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

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2 points

I wanted to make that joke 😟

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35 points
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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)

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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.

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10 points

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

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2 points

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

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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.

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2 points

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

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2 points

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

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8 points

You’re missing a 4 in the alkaline line

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8 points

Thank you (4 now added!)

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26 points

Isn’t it Potential of Hydrogen?

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3 points

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

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11 points

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.

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4 points

Are We Smarter Than A 5th Grader?

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2 points

Same for me

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1 point

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

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2 points

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

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13 points

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

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!xkcd@lemmy.world

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