36. Who discovered the concept of the cyclotron?
a) Ernest O. Lawrence
b) Marie Curie
c) Pierre Curie
d) Antoine Becquerel
37. Who discovered the concept of the Michelson-Morley experiment?
a) Albert Michelson and Edward Morley
b) Marie Curie
c) Pierre Curie
d) Antoine Becquerel
38. Who discovered the concept of the photoelectric effect?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
39. Who discovered the concept of Brownian motion?
a) Robert Brown
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
40. Who discovered the concept of the wave-particle duality?
a) Louis de Broglie
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell