How did Ramsay and Travers discover Neon?

Ramsay and Travers discovered neon in 1898 while conducting experiments with liquid argon. They isolated the gas by cooling argon and analyzing its components, leading to the identification of neon as a distinct element. Their work involved using a spectroscope, which revealed the bright red-orange emission spectrum characteristic of neon. This discovery added to the understanding of the noble gases and expanded the Periodic Table.