The learned compute that seven hundred and seven millions of millions of vibrations have to penetrate the eye before the eye can distinguish the tints of a violet.
The Works of Edward Bulwer-Lytton (Lord Lytton)... (ed. 1850)
The learned compute that seven hundred and seven millions of millions of vibrations have to penetrate the eye before the eye can distinguish the tints of a violet.
The Works of Edward Bulwer-Lytton (Lord Lytton)... (ed. 1850)