View Catalog: NATP00004
|MS Add. 3975, pp. 1-22
|Place of Origin
|Cambridge University Library (Cambridge)
An illustrated account of Newton's first ventures into optical experimentation. Using his own eyes as subjects, he seriously risked blinding himself with experiments such as staring directly into the sun or poking a small knife into his eye socket to see what effect this would have on his visual perceptions. Astonishingly, his eyesight remained excellent until his death at the age of over eighty.