This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!Buzz·Posted on Dec 24, 2013The 13 Greatest Scientists (By Beard)From throughout the ages.by Matt AllinsonCommunity ContributorLinkFacebookPinterestTwitterMail 13. Alexander Graham-Bell 12. Gilbert Lewis 11. Norbert Rillieux 10. Leonardo Da Vinci 9. Wilhelm Röntgen 8. Francois Englert 7. Ernst Mach 6. Abdallah Muhammad Ibn Jabir Ibn Sinan al-Battani al-Harrani 5. Charles Darwin 4. William Thomson, 1st Baron Kelvin 3. Ivan Pavlov 2. Igor Kurchatov 1. Dmitri Mendeleev