Engineer and physicist who invented the traveling-wave tube (TWT). He received the National Medal of Science in 1974 for his invention.
He was initially going to become an architect but had a love for electronics and physics.
He was recruited to work for the British army during World War II on a secret microwave vacuum tube research program.
He moved to England due to antisemitism and resided in Stanford, California until his death.
He was a contemporary of fellow Austrian physicist Wolfgang Pauli.