Comment on Guess I'll km/s
bleistift2@sopuli.xyz 5 weeks agoThat’s interesting. Obviously, you’d put a center dot to disambiguate millihertz from meter-hertz, but I can’t recall ever having learned a rule about that. So some combinations of units are inherently ambiguous?
renzev@lemmy.world 5 weeks ago
I can’t tell which unit is more cursed: millihertz or meter hertz. Surely, anything that could be measured in millihertz is more natural to measure as a period, or as revolutions per minute or something, right?
Technus@lemmy.zip 5 weeks ago
Something that occurs once a hour has a frequency of 277.777… μHz
Technus@lemmy.zip 5 weeks ago
You know, I always figured optometry involved like, super complicated math and shit.
Turns out it’s just basic arithmetic.
Kinda like programming, in a way.
rockerface@lemm.ee 5 weeks ago
Yeah, from my experience ordering glasses, it’s mostly about making sure the lenses are aligned with my retinas to focus the light in the right spots. All the numbers are just a way to formalize those measurements so that the lens maker gets it right
Technus@lemmy.zip 5 weeks ago
My last optometrist refused to tell me what my prescription was. I should have insisted, they’ve since closed up shop.
Eheran@lemmy.world 5 weeks ago
Speed as meter per hertz is a rather odd case, like with a machine that goes in discrete steps.
In any case, I never use implied multiplication (and others) and always simply put everything where it should be.
bleistift2@sopuli.xyz 5 weeks ago
Tell me you don’t glasses without telling me you don’t need glasses :D