radiation on a semi$-$transparent medium is at a rate of $670$ W$/$m$2.$ If $160$ W$/$m$2$ of the irradiation is reflected from the medium and $130$ W$/$m$2$ is transmitted through the medium,

Problem $12\mathrm{.}093.$c $-$ Transmissivity of a semi$-$transparent medium

Determine the transmissivity of the medium.

The transmissivity of the medium is