| Show we see bcd kent all color colors are not equally percel perceived ed by the e ee c when in gradual succession luminous rays ot of all pos sible are caused to strike the ee we obtain in successive gradation the sensation 0 of all the colors of the spectrum the ave aves which mot most low slow 1 affect the thee eye e produce a sensation seni atlon of red thoe those walh act somewhat tome what more rapidly a sensation of scarlet then in lit succession we find as the frequencies increase that the sensations sene atlon produced are those of orange red reddish orange orange ello 11 orange orange yellow ello y yellow t greenish ellon 11 yellowish ello h green green bluish ereen er e en greenish greenis blue blue blue violet violet lolet W waves aves of F ill 41 greater rapidity than those N aich produce of violet lolet are practically in invisible isible to the ee eye |