2. Galileo Galilei (Italy) - Law of inertia
3. Christian Huygens ( Holland) - Wave theory of light
4. Issac Newton (UK) - Universal law of gravitation; law of motion; Reflecting telescope
5. Michael Faraday (UK) - Law of electromagnetic induction
6. James Clerk Maxwell (UK) - Electro magnetic theory;Light-an electromagnetic wave
7. Heinrich Rudolf Hertz (Germany) - Generation of electromagnetic waves
8. J.C.Bose (India) - Ultra short radio waves
9. W.K.Roentgen (Germany) - X-rays
10. J.J.Thomson (U.K) - Electron
11. Marie Sklodowska Curie (Poland) - Discovery of radium & Polonium; studies on natural radio activity
12. Albert Einstein (Germany) - Explanation of photoelectric effect; Theory of relativity
13. Victor Francis Hess (Austria) - Cosmic Radiation
14. R.A.Millikan(USA) Measurement of electronic charge
15. Ernest Rutherford (New Zealand) - Nuclear model of atom
16. Niels Bohr (Denmark) - Quantum model of hydrogen atom
17. C.V.Raman (India) - Inelastic scattering of light by molecules
18. Louis Victor de Borglie (France) - Wave nature of matter
19. M.N.Saha (India) - Thermal Ionisation
20. S.N.Bose (India) - Quantum statistics
21. Enrico Fermi (Iyaly) - Controlled nuclear fission
22. Werner Heinsberg(Germany) - Quantum mechanics; Uncertainty principle
23. Paul Dirac (UK) - Relativistic theory of electron; Quantum statistics
24. Edwin Hubble (USA) - Expanding universe
25. Ernest Orlando Lawerence (USA) - Cyclotron
26. James Chadwick (UK) - Neutron
27. Hideki Yukawa(Japan) - Theory of nuclear forces
28. Homi Jehangir Bhabha (India) - Cascade process of cosmic radiation
29. Lev Davidovich Landau (Russia) - Theory of condensed matter; Liquid helium
30. S.Chandrasekhar(India)-Chandrasekhar limit,structure & evolution of stars
31. John Bardeen (USA) - Transistors, Theory of super conductivity
32. C.H.Towens (USA) - Maser ; Laser
33. Abdus Salam (Pakistan) -