this post was submitted on 25 Oct 2025
519 points (95.6% liked)
Science Memes
18054 readers
3141 users here now
Welcome to c/science_memes @ Mander.xyz!
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
- Don't throw mud. Behave like an intellectual and remember the human.
- Keep it rooted (on topic).
- No spam.
- Infographics welcome, get schooled.
This is a science community. We use the Dawkins definition of meme.
Research Committee
Other Mander Communities
Science and Research
Biology and Life Sciences
- !abiogenesis@mander.xyz
- !animal-behavior@mander.xyz
- !anthropology@mander.xyz
- !arachnology@mander.xyz
- !balconygardening@slrpnk.net
- !biodiversity@mander.xyz
- !biology@mander.xyz
- !biophysics@mander.xyz
- !botany@mander.xyz
- !ecology@mander.xyz
- !entomology@mander.xyz
- !fermentation@mander.xyz
- !herpetology@mander.xyz
- !houseplants@mander.xyz
- !medicine@mander.xyz
- !microscopy@mander.xyz
- !mycology@mander.xyz
- !nudibranchs@mander.xyz
- !nutrition@mander.xyz
- !palaeoecology@mander.xyz
- !palaeontology@mander.xyz
- !photosynthesis@mander.xyz
- !plantid@mander.xyz
- !plants@mander.xyz
- !reptiles and amphibians@mander.xyz
Physical Sciences
- !astronomy@mander.xyz
- !chemistry@mander.xyz
- !earthscience@mander.xyz
- !geography@mander.xyz
- !geospatial@mander.xyz
- !nuclear@mander.xyz
- !physics@mander.xyz
- !quantum-computing@mander.xyz
- !spectroscopy@mander.xyz
Humanities and Social Sciences
Practical and Applied Sciences
- !exercise-and sports-science@mander.xyz
- !gardening@mander.xyz
- !self sufficiency@mander.xyz
- !soilscience@slrpnk.net
- !terrariums@mander.xyz
- !timelapse@mander.xyz
Memes
Miscellaneous
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
You can't calculate 2+2 with a slide rule
Maybe you can't
Moves C index to 2 on the D scale
Moves indicating line to 2 on the C scale
Reads 4 on the D scale
Good thing 2+2 and 2*2 yield the same answer. Would have to bust out the addiator otherwise
abacus say what?
Yoy can use 2 normal rules to add/rest 2 numbers, but you can't do it in a slide rule with its logarithm scales. But luckily there are solutions out there
Well, but fails with 3+3, there an US engineer must use still an addiator. Nowadays it's easier with an pocket calculator.
But a pocket calculator doesn't get you nearly enough street cred these days
Well, even an iPhone has an calculator by default (maybe with an monthly fe)
But when I'm at the club with my friends and I pull out the Pickett model N600-ES speed rule to calculate the tip, all the eyes are on me
In my studies I used a doble side rule, the Faber-Castell 2/83 N Novo-Duplex, 31 scales, not so practical for the pocket (>38cm)
You could probably do log_10(10²×10²) instead?
It's the same as 2*2
ln(2) + ln(2) = ln(4)
Try with 3+3
Sorry, that's too complicated for me