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Name Year Country Science 
achievements 
41 

Johann Carl Friedrich Gauss
17771855 Germany Physics, Mathematics

formulated separate electrostatic and electrodynamical laws, including ``Gauss' law'';

42 

Wilhelm Rontgen
18451923 Germany Physics

discovered and studied x rays

43 

Erwin Schrodinger
18871961 Austria Physics

contributed to creation of quantum mechanics; formulated the SchrÃ¶dinger wave equation

44 

Werner Heisenberg
19011976 Germany Physics

contributed to creation of quantum mechanics; introduced the ``uncertainty principle'' and the concept of exchange forces

45 

Pythagoras
570495 Greece Mathematics, Geodesy

Pythagorean theorem

46 

John von Neumann
19031957 Hungary Physics, Mathematics, Computer science

formulated a fully quantum mechanical generalization of statistical mechanics

47 

PierreSimon Laplace
17491827 France Astronomy, Mathematics, Geodesy

made important mathematical contributions to differential equations; promoted the solar nebula hypothesis for the origin of the solar system





48 

Charles Babbage
17911871 United Kingdom Computer science, Inventions

Designed the Analytical Engine and built a prototype for a less powerful mechanical calculator. (1822)

49 

Tim BernersLee
1955 United Kingdom Computer science

Invented worldwide web. With Robert Cailliau, sent first HTTP communication between client and server. (1989)

50 

Edward Jenner
17491823 United Kingdom Medicine, Biology

Smallpox vaccine; Vaccination
