![Digital Library | Historical Society of Pennsylvania : Item : Isaac Newton letter to Robert Hooke, 1675 [9792] Digital Library | Historical Society of Pennsylvania : Item : Isaac Newton letter to Robert Hooke, 1675 [9792]](https://digitallibrary.hsp.org/media/pawtucket/images/7/0/4/13381_ca_object_representations_media_70422_large.jpg)
Digital Library | Historical Society of Pennsylvania : Item : Isaac Newton letter to Robert Hooke, 1675 [9792]
![Diagram representing gravity, by Isaac Newton. England [Cambridge]; 1679. [Diagram only] Diagram representing gravity; from an autograph letter of Sir Isaac Newton to Dr Robert Hooke. The diagram shows Newton's idea of Diagram representing gravity, by Isaac Newton. England [Cambridge]; 1679. [Diagram only] Diagram representing gravity; from an autograph letter of Sir Isaac Newton to Dr Robert Hooke. The diagram shows Newton's idea of](https://c8.alamy.com/comp/R5FY1M/diagram-representing-gravity-by-isaac-newton-england-cambridge-1679-diagram-only-diagram-representing-gravity-from-an-autograph-letter-of-sir-isaac-newton-to-dr-robert-hooke-the-diagram-shows-newtons-idea-of-the-trajectory-of-a-body-falling-towards-the-centre-of-the-earth-trinity-college-cambridge-13-december-1679-source-add-37021-f56-language-english-R5FY1M.jpg)
Diagram representing gravity, by Isaac Newton. England [Cambridge]; 1679. [Diagram only] Diagram representing gravity; from an autograph letter of Sir Isaac Newton to Dr Robert Hooke. The diagram shows Newton's idea of
Historical Society of Pennsylvania - In this end of the year edition of #OnlyAtHSP, we feature a letter between Sir Isaac Newton to his colleague and rival Robert Hooke. Dated February 5,
![Standing on the Shoulders of Giants: The Story Behind Newton's Famous Metaphor for How Knowledge Progresses – The Marginalian Standing on the Shoulders of Giants: The Story Behind Newton's Famous Metaphor for How Knowledge Progresses – The Marginalian](https://i0.wp.com/www.themarginalian.org/wp-content/uploads/2016/02/newton_giants3.jpg?resize=680%2C473&ssl=1)