What was francis bacon known for?

Francis Bacon (January 22, 1561) politically served as an attorney general and Lord Chancellor of England by being in Parliament for almost four decades (1584 to 1617) In 1603, three years before he married heiress Alice Barnham, Bacon became a knight to James I when he married heiress Alice Barnham. Philosophically, he is known for focusing on experimentation and interaction, and through his new scientific methods of gathering data with organization and system to make science more empirical and usable for mankind.  

Primary sources are usually  more accurate and are written by someone who experienced it or witnessed it. secondary sources are those who heard of it after the fact that can lose details and or twist the event in a light that benefits them.