Opticks is a work by English natural philosopher Isaac Newton that was published in English in 1704. (A scholarly Latin translation appeared in 1706.) The book analyzes the fundamental nature of light by means of the refraction of light with prisms and lenses, the diffraction of light by closely spaced sheets of glass, and the behaviour of color mixtures with spectral lights or pigment powders. It is considered one of the great works of science in history. Opticks was Newton's second major book on physical science. This edition has been formatted for your reader, with an active table of contents. This work is also illustrated and annotated, with additional information about the book and Isaac Newton, including an overview, summary, differences from the Principia, information about the Queries, reception, biographical and bibliographical information.