"Index of Refraction for air n1" "Angle of Incidence (1°) 1" "Angle of Refraction (1° ) 2" "Index of refraction for solution n2" Index of Refraction for solution % uncertainty 1.00029 57.99 43.34 1.33838 0.02798 1.00029 57.99 42.31 1.37124 0.02803 1.00029 57.99 41.95 1.38282 0.02841 1.00029 57.99 40.12 1.44592 0.03049 1.00029 57.99 39.74 1.45969 0.03085 1.00029 57.99 39.36 1.47389 0.03143 1.00029 57.99 38.58 1.50362 0.03245 1.00029 57.99 37.38 1.55188 0.03414 1.00029 57.99 36.14 1.6051 0.03605 1.00029 57.99 34.43 1.68508 0.039