Sir Isaac Newton 's manuscripts published online by Cambridge University Library . More than 4,000 pages -- a fraction of university 's entire archive -- digitized so far . Experts say these are ` ` some of the most papers and documents in the history of science '' Newton described law of motion , developed calculus , studied speed of light .
Sir Isaac Newton 's manuscripts published online by Cambridge University Library . More than 4,000 pages -- a fraction of university 's Newton archive -- digitized so far . Experts say notes are `` some of the most papers and documents in the history of science '' Newton described law of gravity , developed calculus , studied properties of light .