this post was submitted on 14 Apr 2025
1434 points (97.7% liked)

Science Memes

14312 readers
1922 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

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. 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

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago
MODERATORS
[email protected]
[email protected]
[email protected]
[email protected]
1434
[Partially incorrect, see comments.] Pens in Space (mander.xyz)
submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]
140 comments fedilink hide all child comments
 
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 16 points 1 week ago (1 children)

it hasn’t been graphite for while now either….

pencil lead

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

Chalk isn't chalk?

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

Regular chalk is calcium carbonate. Crayola's website says their sidewalk chalk uses calcium sulfate (gypsum as an ingredient in plaster of paris).

So they're both calcium salts.