Reduction factor is given as:
(Where M.S.C.P. is mean spherical candle power and M.H.C.P. is mean horizontal candle power.)
1
\(\frac{M . S . C . P .}{M . H . C . P .}\)
2
\(\text { M.S.C.P. }=\left(1-\frac{1}{M . H . C . P .}\right)\)
3
\(\frac{M . H . C . P .}{M . S . C . P .}\)
4
M.H.C.P × M.S.C.P