While Isaac Newton proposed the particle theory of light, Huygens, in his book "Treatise on Light" (1690), presented the wave theory. He proposed that light propagates as waves, similar to how sound waves travel through air.
However, Huygens' theory was initially met with skepticism and was overshadowed by Newton's influential particle theory. It wasn't until the early 19th century that experiments by Thomas Young and Augustin-Jean Fresnel provided strong evidence supporting Huygens' wave theory.
Therefore, while Huygens initially proposed the wave theory of light, it took time and further experimental evidence for it to gain acceptance and become widely recognized.
