Question

According to Dutch scientist Christiaan Huygens, what was light made of

Answer 1

The right answer is actually waves.

Answer 2

Sir Isaac Newton, held the theory that light was made up of tiny particles. In 1678, Dutch physicist, Christiaan Huygens, believed that light was made up of waves vibrating up and down perpendicular to the direction of the light travels, and therefore formulated a way of visualizing wave propagation.