Dipping Refractor True Velocity UpDown Dip Calculator
True refractor velocity from updip/downdip apparent velocities: V₂ = 2V_uV_d·cosα/(V_u+V_d).
Description
True refractor velocity from updip/downdip apparent velocities: V₂ = 2V_uV_d·cosα/(V_u+V_d).