7 ms·
Which is why it says: ... you would have the traditional unit for the kilometer as defined in 1791 by the French Academy of Sciences.
by iams 7y ago
Which is why it says:
... you would have the traditional unit for the kilometer as defined in 1791 by the French Academy of Sciences.
- theandrewbailey 7y agoWouldn't you need the 1791 Earth, too? The article doesn't mention that it's not the current definition.