4 ms·
The weirdest part of SI is the whole luminous units. It was the hardest to understand. And why (in definition) is `lm = cd * sr`, not the normal way around `cd
by volemo 3y ago
The weirdest part of SI is the whole luminous units. It was the hardest to understand. And why (in definition) is `lm = cd * sr`, not the normal way around `cd = lm / sr`?