What frequency corresponds to an absorption line at 460 mm?

To find the frequency corresponding to an absorption line at 460 nm (nanometers), we can use the formula ( f = \frac{c}{\lambda} ), where ( c ) is the speed of light (approximately ( 3 \times 10^8 ) m/s) and ( \lambda ) is the wavelength in meters. Converting 460 nm to meters gives us ( 460 \times 10^{-9} ) m. Plugging in the values, we get ( f \approx \frac{3 \times 10^8 \text{ m/s}}{460 \times 10^{-9} \text{ m}} \approx 6.52 \times 10^{14} \text{ Hz} ).