Hacker News 50 on Nostr: What are these bumps on the top of a pull-tab can? Link: ...
What are these bumps on the top of a pull-tab can?
Link: https://old.reddit.com/r/whatisthisthing/comments/1i5ztq4/comment/m8a7m8m/
Discussion: https://news.ycombinator.com/item?id=42788455
Link: https://old.reddit.com/r/whatisthisthing/comments/1i5ztq4/comment/m8a7m8m/
Discussion: https://news.ycombinator.com/item?id=42788455