What exactly did Thomas young do?

Thomas Young was a British polymath known for his significant contributions to various fields, including physics, medicine, and linguistics. He is best recognized for his work on the wave theory of light, particularly through the famous double-slit experiment, which demonstrated the wave-like behavior of light. Additionally, Young made advancements in anatomy and was instrumental in deciphering Egyptian hieroglyphs, contributing to our understanding of the Rosetta Stone. His interdisciplinary work laid foundational principles in both optics and the study of languages.