What did Sir William Ramsey and Morris travers do?

Sir William Ramsay and Morris Travers are known for their discovery of the noble gases in the late 19th century. In 1894, they isolated argon from air, and subsequently, they identified and isolated helium, neon, krypton, and xenon. Their work significantly advanced the understanding of the Periodic Table and contributed to the recognition of noble gases as a distinct group of elements. Ramsay was awarded the Nobel Prize in Chemistry in 1904 for these contributions.