The second is one of the 7 fundamental units
There is no metric measure of time.
TonyTonyChopper@mander.xyz 9 months ago
Everythingispenguins@lemmy.world 9 months ago
Yes it is, but SI is not all metric. Metric is fundamentally a base 10 system. Time is base 60 you can probably thank the ancient Sumerians for that but there’s some debate.
At one point the French tried to make metric time a thing but it didn’t stick.
TonyTonyChopper@mander.xyz 9 months ago
Short times are always given in scales of 10 for seconds (ms, μs, ns). And long ones can be too.
Everythingispenguins@lemmy.world 9 months ago
And machinists in America use decimal inches, but I don’t think anyone would say that includes is metric.
SkybreakerEngineer@lemmy.world 9 months ago
I’m sorry, can you restate that in terms of the number of ground state transitions of a Cs-136 atom?