\t\r"," Thin Lens Equation: \r"," 1 ⁄ ƒ = 1 ⁄ S1 + 1 ⁄ S2 \r"," Transverse Magnification (M T ): \r"," M T = - S i ⁄ S o \r"," or M T = - h i ⁄ h o \r"," ...