3 ms·
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 sc
by spydum 11y ago
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
- sanxiyn 11y agoWe actually know why. Check the paper series "Stability of reference masses" published in Metrologia. Summary: mercury contamination.
- michaelhoffman 11y agoBefore 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.