Early work by father of Newtonian physics made available online
Cambridge University Library has published nearly 4,000 pages of material online from the famous physicist and mathematician Isaac Newton.
Mathematical and scientific manuscripts, including some of the mathematics he developed to uncover the principles of Newtonian physics, are available on the Cambridge Digital Library site, which gives the public access to Newton's 17th century scientific works.
Here's the original cover of Newton's "Waste Book", a notebook in which he developed much of his important work on calculus. He started using the notebook in 1664 when he was away from Cambridge due to the plague.
Newton's work in mathematics led to the description of the laws of motion and of gravity as a force.
The first page of one of Newton's notebooks, dated 1661, includes the notation "Not fit to be printed".
Work from 1670 when Newton was researching the refraction of light and developing his theory of colour.
He demonstrated that a prism could separate white light into a spectrum of colours, and eventually built the first known functional reflecting telescope, today known as the Newtonian telescope.
Calculations on a page in the "Waste Book".
An 80-megapixel camera was used to photograph Newton's Principia, seen here on the conservation cradle at the University of Cambridge.
Sir Isaac Newton's Principia laid out the mathematical foundation for gravity and the laws of motion.
Some of the pages of the first edition of the Principia have suffered fire damage.