You are currently converting frequency units from millisecond(period) to second(period)
1 ms(p) = 0.001 s(p)
Conversion base :
1 ms(p) = 0.001 s(p)
Conversion base :
1 s(p) = 1000 ms(p)
Period
The period is not the same dimension than the frequency. The frequency (f) is the reciprocal of the period (T) : f = 1/T
We have merged period and frequency here to allow easy conversions between both dimensions.