The Life of Sir Isaac Newton

appear astronomical attraction believe blue bodies Cambridge cause centre colours communicated composed consequence considered contained continued correspondence curves dated determine direction discovered discoveries distance doctrine doubt earth East Lothian equal experiments explain expressed fact force give given glass gravity Gregory heat Hooke important inquiries invention labours Leibnitz letter light London manuscript mathematical matter means method mind moon motion nature never object observations obtained opinion Optics orbit original particles pass person philosopher planets plate possessed present Principia principles prism produced published rays reason received referred reflected refraction relation remarkable respecting Royal Society says seems seen Sir Isaac Newton space spectrum supposed surface telescope theory thing thought took transmitted truth views writings written yellow