3 ms·
I'm not sure I understand: surely we can just say that one kilo is a certain number of carbon 12 atoms, and have done? Would seem sensible to me.
by scotchmi_st 13y ago
I'm not sure I understand: surely we can just say that one kilo is a certain number of carbon 12 atoms, and have done? Would seem sensible to me.
- logicallee 13y agoOK - how many?
- Leszek 13y agoPresumably 6.0221413 * 10^23 * 1000 / 12 = 5.0184511 * 10^25
- mdturnerphys 13y agoIt's a standard, yes, but it's really hard to reproduce.
- deleted 13y ago[deleted]
- PeterisP 13y agoIn order to make practical use of that (i.e., calibrate a weight-measurement-tool) you need to be able to somehow make an artifact with that certain number of carbon 12 atoms, or measure the count of atoms with a sufficient accuracy.