Hacker News new | comments | ask | show | jobs | submit login

i was hoping this was going to explain the kg differences between the original and the copies. instead it just resolves it by changing the standard. good for science i guess, sad for my curiosity



We actually know why. Check the paper series "Stability of reference masses" published in Metrologia. Summary: mercury contamination.


Before I was disturbed by the change in apparent mass without explanation.

Now I'm disturbed that the people working in these laboratories were exposed to mercury themselves. Nasty stuff.




Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact

Search: