The theory of wave-particle duality has been the subject of a long debate, going back several centuries. Quantum Waves III tells the story.
 The debate begins with Christian Huygens, a Dutch physicist of the 17th century. Huygens stipulates that light observes a wave behavior. But his theory was contradicted by Isaac Newton, an English physicist of the same era, who put forward a theory of corpuscular displacement.
 Newton's scientific fame allowed his theory to be accepted by the scientific community.
 But this was without the intervention of the work of Thomas Young and Augustin Fresnel on diffraction at the beginning of the 19th century, which allowed Huygens' theory to be brought back to the forefront, and it was gradually accepted again.
 It was then up to Albert Einstein to reintroduce the idea of light of a corpuscular nature...
 Many experiments today make it possible to highlight this wave-particle duality, the most famous of which is Young's slits.