Wavelength(nm) n k 250 1.4117 0 275 1.4044 0 300 1.3996 0 325 1.3961 0 350 1.3935 0 375 1.3915 0 400 1.3899 0 425 1.3886 0 450 1.3875 0 475 1.3865 0 500 1.3857 0 525 1.385 0 550 1.3844 0 575 1.3839 0 600 1.3834 0 625 1.383 0 650 1.3826 0 675 1.3823 0 700 1.3819 0 725 1.3816 0 750 1.3814 0 775 1.3811 0 800 1.3809 0 825 1.3807 0 850 1.3805 0 875 1.3803 0 900 1.3802 0