Here's a breakdown:
* Ancient Greeks: Philosophers like Euclid and Ptolemy recognized that light bends when passing from one medium to another, like air to water. However, they didn't have a complete understanding of the physics behind it.
* Ibn al-Haytham: In the 11th century, this Arab scholar made significant contributions to optics. He accurately described how light travels in straight lines and experimented with refraction, explaining how light bends when entering denser mediums.
* Willebrord Snell: In the early 17th century, Snell discovered the mathematical law that governs refraction, now known as Snell's Law. It quantifies the relationship between the angles of incidence and refraction and the refractive indices of the two media.
* Isaac Newton: Newton made further advancements in understanding refraction through his work on the nature of light. He showed that white light is composed of different colors, each refracting at a slightly different angle, explaining the formation of rainbows.
Therefore, while individuals like Snell and Newton contributed significantly to our understanding of refraction, the phenomenon itself is a natural property of light that was observed and studied by many over centuries.