The spelling of the name "Berta Karlik" can be explained using the International Phonetic Alphabet (IPA). "Berta" is spelled /ˈbɛrtə/, where the stress is on the first syllable and the "e" is pronounced as the short "e" sound. "Karlik" is spelled /ˈkɑrlɪk/, where the stress is on the first syllable and the "a" is pronounced as the short "a" sound. In English, the name would be pronounced as "BUR-tuh KAR-lik." Berta Karlik was an Austrian physicist known for her work in nuclear physics and radioactivity.