surface density उदाहरण वाक्य

Once the roots and wave numbers are determined, the angular frequencies peculiar to the modes are given by : \ omega _ { m, n } = k _ { m, n } * c where c is the velocity propagation of transverse waves in the membrane, c = \ sqrt { T / \ sigma } where T is the stretching force of the rim and \ sigma is the surface density of the membrane.